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Weather & Battlefield Effects - Rinjii - 08-22-2026
WEATHER & BATTLEFIELD EFFECTS
Calpheon Wilds
Weather and battlefield effects can change the conditions of a fight for everyone involved.
Rain may strengthen Water-type attacks, grassy terrain can slowly restore HP, barriers can reduce incoming damage, and hazards can punish Pokémon that move into dangerous areas.
The Battle System tracks these effects automatically, but tamers should understand how they can change the battlefield and influence their choices.
JUMP TO SECTION
I. Weather
II. Terrain
III. Barriers
IV. Battlefield Hazards
V. Duration & Replacement
VI. Natural Conditions
VII. Quick Reference
Battle Guides Navigation
Calpheon Wilds
Weather and battlefield effects can change the conditions of a fight for everyone involved.
Rain may strengthen Water-type attacks, grassy terrain can slowly restore HP, barriers can reduce incoming damage, and hazards can punish Pokémon that move into dangerous areas.
The Battle System tracks these effects automatically, but tamers should understand how they can change the battlefield and influence their choices.
JUMP TO SECTION
I. Weather
II. Terrain
III. Barriers
IV. Battlefield Hazards
V. Duration & Replacement
VI. Natural Conditions
VII. Quick Reference
Battle Guides Navigation
I. WEATHER
01. WEATHER DURING BATTLE
Weather can be part of the natural environment or created by a Pokémon move or Ability.
Weather affects the battlefield as a whole unless its specific rules say otherwise.
Only one move-created Weather condition can be active at a time.
Weather affects the battlefield as a whole unless its specific rules say otherwise.
Only one move-created Weather condition can be active at a time.
02. RAIN
Rain strengthens Water-type attacks and weakens Fire-type attacks.
• Water-type damage: ×1.25
• Fire-type damage: ×0.75
Natural rain may also affect visibility, footing, fire, or other environmental conditions when appropriate.
• Water-type damage: ×1.25
• Fire-type damage: ×0.75
Natural rain may also affect visibility, footing, fire, or other environmental conditions when appropriate.
03. HARSH SUNLIGHT
Harsh Sunlight strengthens Fire-type attacks and weakens Water-type attacks.
• Fire-type damage: ×1.25
• Water-type damage: ×0.75
• Fire-type damage: ×1.25
• Water-type damage: ×0.75
04. SANDSTORM
A Sandstorm damages exposed Pokémon at the end of each turn.
Damage:
5% of Maximum HP
Rock-type, Ground-type, and Steel-type Pokémon do not take Sandstorm damage.
Sandstorms may also affect visibility or other environmental Actions when the conditions are severe enough.
Damage:
5% of Maximum HP
Rock-type, Ground-type, and Steel-type Pokémon do not take Sandstorm damage.
Sandstorms may also affect visibility or other environmental Actions when the conditions are severe enough.
05. SNOW
Snow strengthens the defenses of Ice-type Pokémon.
While Snow is active, Ice-type Pokémon receive:
+10% Effective Resilience
This bonus applies while the Snow remains active.
While Snow is active, Ice-type Pokémon receive:
+10% Effective Resilience
This bonus applies while the Snow remains active.
06. FOG
Fog makes it more difficult to clearly see and target opponents.
While Fog is active:
Accuracy is reduced by 10 percentage points.
Other visibility effects may also apply when the natural environment creates especially thick fog.
See Positioning & Environment for visibility and Line of Sight rules.
While Fog is active:
Accuracy is reduced by 10 percentage points.
Other visibility effects may also apply when the natural environment creates especially thick fog.
See Positioning & Environment for visibility and Line of Sight rules.
07. STRONG WIND
Strong Wind can interfere with ranged attacks, flight, and movement through exposed areas.
Depending on its severity, wind may apply:
• Minor: -5 percentage points
• Significant: -10 percentage points
• Major: -15 percentage points
These penalties are used when the wind reasonably interferes with the Action, such as a projectile attack or airborne movement.
Staff will describe the effect when Strong Wind is present.
Depending on its severity, wind may apply:
• Minor: -5 percentage points
• Significant: -10 percentage points
• Major: -15 percentage points
These penalties are used when the wind reasonably interferes with the Action, such as a projectile attack or airborne movement.
Staff will describe the effect when Strong Wind is present.
II. TERRAIN
01. WHAT IS TERRAIN?
Terrain effects change the condition of the battlefield itself.
Move-created Terrain primarily affects Pokémon that are Grounded.
Only one move-created Terrain can be active at a time.
Move-created Terrain primarily affects Pokémon that are Grounded.
Only one move-created Terrain can be active at a time.
02. ELECTRIC TERRAIN
Electric Terrain energizes the ground.
While active:
• Electric-type damage: ×1.15
• Grounded Pokémon cannot normally be put to Sleep
A Pokémon that is already Sleeping does not automatically wake unless another effect says so.
While active:
• Electric-type damage: ×1.15
• Grounded Pokémon cannot normally be put to Sleep
A Pokémon that is already Sleeping does not automatically wake unless another effect says so.
03. GRASSY TERRAIN
Grassy Terrain fills the battlefield with restorative plant growth.
While active:
• Grass-type damage: ×1.15
• Grounded Pokémon recover 5% of Maximum HP at the end of each turn
While active:
• Grass-type damage: ×1.15
• Grounded Pokémon recover 5% of Maximum HP at the end of each turn
04. MISTY TERRAIN
Misty Terrain protects Grounded Pokémon from Status Conditions.
While active, the chance of applying a Status Condition to a Grounded Pokémon is:
reduced by half
For example, a move with a 40% chance to cause a Status Condition would have a 20% chance against a protected Grounded Pokémon.
See Status Conditions for Status application rules.
While active, the chance of applying a Status Condition to a Grounded Pokémon is:
reduced by half
For example, a move with a 40% chance to cause a Status Condition would have a 20% chance against a protected Grounded Pokémon.
See Status Conditions for Status application rules.
05. PSYCHIC TERRAIN
Psychic Terrain strengthens Psychic-type attacks and protects Grounded Pokémon from certain Priority attacks.
While active:
• Psychic-type damage: ×1.15
• Grounded Pokémon are protected from damaging moves with positive Priority
While active:
• Psychic-type damage: ×1.15
• Grounded Pokémon are protected from damaging moves with positive Priority
06. GROUNDED POKÉMON
Terrain effects apply according to whether a Pokémon is Grounded.
Airborne Pokémon may avoid effects that specifically require contact with the ground.
See Positioning & Environment for Grounded and Airborne rules.
Airborne Pokémon may avoid effects that specifically require contact with the ground.
See Positioning & Environment for Grounded and Airborne rules.
III. BARRIERS
01. PROTECTIVE BARRIERS
Some Pokémon moves create barriers that reduce incoming damage.
The primary barriers are:
• Reflect
• Light Screen
• Aurora Veil
The primary barriers are:
• Reflect
• Light Screen
• Aurora Veil
02. REFLECT
Reflect protects against Physical attacks.
While Reflect is active:
Physical damage received is reduced by 25%.
While Reflect is active:
Physical damage received is reduced by 25%.
03. LIGHT SCREEN
Light Screen protects against Special attacks.
While Light Screen is active:
Special damage received is reduced by 25%.
While Light Screen is active:
Special damage received is reduced by 25%.
04. AURORA VEIL
Aurora Veil protects against both Physical and Special attacks.
While Aurora Veil is active:
applicable move damage is reduced by 20%.
While Aurora Veil is active:
applicable move damage is reduced by 20%.
05. BARRIERS DO NOT STACK
Reflect, Light Screen, and Aurora Veil do not stack their damage reductions with each other.
If more than one barrier could reduce the same attack, the strongest applicable reduction is used.
Other independent effects, such as an Ability or Nature, may still affect the same attack.
See Abilities & Natures for those effects.
If more than one barrier could reduce the same attack, the strongest applicable reduction is used.
Other independent effects, such as an Ability or Nature, may still affect the same attack.
See Abilities & Natures for those effects.
06. BARRIER DURATION
A barrier created by a move lasts for:
5 full turns
unless its specific effect says otherwise.
5 full turns
unless its specific effect says otherwise.
IV. BATTLEFIELD HAZARDS
01. WHAT ARE HAZARDS?
Hazards are effects placed onto part of the battlefield that punish Pokémon for entering or moving through that area.
Unlike Weather and Terrain, hazards can be tied to a particular position or side of the battlefield.
A Pokémon is only affected when it actually enters an area containing that hazard.
Unlike Weather and Terrain, hazards can be tied to a particular position or side of the battlefield.
A Pokémon is only affected when it actually enters an area containing that hazard.
02. STEALTH ROCK
Stealth Rock damages a Pokémon when it enters the affected area.
The damage depends on how the entering Pokémon's typing interacts with Rock-type attacks.
The damage depends on how the entering Pokémon's typing interacts with Rock-type attacks.
ROCK MATCHUP
ENTRY DAMAGE
Double Resistance
1.25% Maximum HP
Resistance
2.5% Maximum HP
Neutral
5% Maximum HP
Weakness
10% Maximum HP
Double Weakness
20% Maximum HP
03. SPIKES
Spikes damage Grounded Pokémon that enter the affected area.
Additional layers increase the damage.
Additional layers increase the damage.
LAYERS
ENTRY DAMAGE
1 Layer
5% Maximum HP
2 Layers
8% Maximum HP
3 Layers
12% Maximum HP
Airborne Pokémon are not affected by Spikes unless another effect makes them Grounded.
04. TOXIC SPIKES
Toxic Spikes inflict a Status Condition on susceptible Grounded Pokémon that enter the affected area.
• 1 Layer: Poison
• 2 Layers: Bad Poison
Pokémon that cannot be Poisoned are not affected.
See Status Conditions for Poison and Bad Poison rules.
• 1 Layer: Poison
• 2 Layers: Bad Poison
Pokémon that cannot be Poisoned are not affected.
See Status Conditions for Poison and Bad Poison rules.
05. STICKY WEB
Sticky Web slows Grounded Pokémon that enter the affected area.
When triggered:
Speed is lowered by 1 stage.
Airborne Pokémon are not affected unless another effect makes them Grounded.
When triggered:
Speed is lowered by 1 stage.
Airborne Pokémon are not affected unless another effect makes them Grounded.
06. HAZARDS ARE POSITIONAL
A hazard does not automatically cover the entire battlefield.
Its location matters.
For example, Spikes placed across one approach do not automatically affect a Pokémon entering from a completely different direction.
Staff will identify where a hazard has been placed when positioning matters.
Its location matters.
For example, Spikes placed across one approach do not automatically affect a Pokémon entering from a completely different direction.
Staff will identify where a hazard has been placed when positioning matters.
07. OTHER HAZARDS
Moves, environmental Actions, or unusual circumstances may create hazards beyond the standard Pokémon moves.
Examples might include:
• burning ground
• unstable debris
• tangled vegetation
• collapsing terrain
• dangerous ice
• flooded areas
Environmental hazards follow Positioning & Environment when they are not created by a specific Pokémon move.
Examples might include:
• burning ground
• unstable debris
• tangled vegetation
• collapsing terrain
• dangerous ice
• flooded areas
Environmental hazards follow Positioning & Environment when they are not created by a specific Pokémon move.
V. DURATION & REPLACEMENT
01. WEATHER DURATION
Weather created by a Pokémon move lasts for:
5 full turns
unless the move or Ability specifically says otherwise.
5 full turns
unless the move or Ability specifically says otherwise.
02. TERRAIN DURATION
Terrain created by a Pokémon move lasts for:
5 full turns
unless the effect specifically says otherwise.
5 full turns
unless the effect specifically says otherwise.
03. ONE WEATHER AT A TIME
Only one move-created Weather condition can be active at a time.
If a new Weather effect successfully begins, it replaces the existing move-created Weather.
If a new Weather effect successfully begins, it replaces the existing move-created Weather.
04. ONE TERRAIN AT A TIME
Only one move-created Terrain can be active at a time.
If a new Terrain effect successfully begins, it replaces the existing move-created Terrain.
If a new Terrain effect successfully begins, it replaces the existing move-created Terrain.
05. BARRIERS & HAZARDS
Barriers and hazards are separate from Weather and Terrain.
A battlefield may therefore have:
• active Weather
• active Terrain
• a barrier
• one or more hazards
at the same time when their individual rules allow it.
A battlefield may therefore have:
• active Weather
• active Terrain
• a barrier
• one or more hazards
at the same time when their individual rules allow it.
06. EFFECTS END WITH THE BATTLE
Move-created Weather, Terrain, barriers, and battlefield hazards clear when the battle ends.
Permanent changes to the physical environment may remain when the roleplay supports it.
For example, a fallen tree or damaged structure does not repair itself simply because the battle ended.
Permanent changes to the physical environment may remain when the roleplay supports it.
For example, a fallen tree or damaged structure does not repair itself simply because the battle ended.
VI. NATURAL CONDITIONS
01. NATURAL WEATHER
The weather already present in the thread is part of the environment.
Natural rain, snow, wind, fog, or other conditions do not disappear simply because a Pokémon creates temporary Weather.
Natural rain, snow, wind, fog, or other conditions do not disappear simply because a Pokémon creates temporary Weather.
02. TEMPORARY WEATHER OVERLAYS
A Pokémon-created Weather effect temporarily takes control of the battle's Weather mechanics.
When that effect ends, the natural conditions of the location return.
For example, if Rain Dance temporarily changes the conditions during an encounter taking place in natural snow, the snowy environment returns when the move-created Rain ends.
When that effect ends, the natural conditions of the location return.
For example, if Rain Dance temporarily changes the conditions during an encounter taking place in natural snow, the snowy environment returns when the move-created Rain ends.
03. NATURAL CONDITIONS MAY DO MORE
Natural weather can affect more than Pokémon move damage.
Depending on the environment, it may also change:
• visibility
• movement
• cover
• fire
• water conditions
• flight
• environmental Actions
These effects are handled through Positioning & Environment.
Depending on the environment, it may also change:
• visibility
• movement
• cover
• fire
• water conditions
• flight
• environmental Actions
These effects are handled through Positioning & Environment.
04. WEATHER ABILITIES
Some Abilities create Weather or become stronger while certain Weather is active.
The Battle System automatically applies those Ability effects when their conditions are met.
See Abilities & Natures for more information.
The Battle System automatically applies those Ability effects when their conditions are met.
See Abilities & Natures for more information.
05. WEATHER MOVES & SPECIAL EFFECTS
Some moves interact with Weather or Terrain in unique ways.
When a move has a specific rule that differs from the standard battlefield effect, its individual rule is used.
Unusual move interactions are covered in Special Move Rules.
When a move has a specific rule that differs from the standard battlefield effect, its individual rule is used.
Unusual move interactions are covered in Special Move Rules.
VII. QUICK REFERENCE
EFFECT
HOW IT WORKS
Rain
Water ×1.25, Fire ×0.75
Harsh Sunlight
Fire ×1.25, Water ×0.75
Sandstorm
5% Maximum HP per turn, Rock/Ground/Steel immune
Snow
Ice-types gain +10% Effective Resilience
Fog
-10 percentage points to Accuracy
Strong Wind
May apply -5, -10, or -15 percentage points when relevant
Electric Terrain
Electric ×1.15, Grounded Pokémon protected from Sleep
Grassy Terrain
Grass ×1.15, Grounded Pokémon recover 5% Maximum HP
Misty Terrain
Halves Status application chance against Grounded Pokémon
Psychic Terrain
Psychic ×1.15, Grounded Pokémon protected from positive-Priority damaging moves
Reflect
Physical damage received -25%
Light Screen
Special damage received -25%
Aurora Veil
Applicable move damage received -20%
Barrier Duration
5 full turns
Move-Created Weather
5 full turns
Move-Created Terrain
5 full turns
Stealth Rock
1.25%-20% Maximum HP depending on Rock matchup
Spikes
5%, 8%, or 12% Maximum HP depending on layers
Toxic Spikes
1 Layer Poison, 2 Layers Bad Poison
Sticky Web
Speed -1 stage
Weather Limit
1 move-created Weather at a time
Terrain Limit
1 move-created Terrain at a time
Battle End
Move-created battlefield effects clear
The battlefield is always changing. Weather, Terrain, barriers, and hazards can turn an ordinary matchup into a very different fight.