Immunity - Ability ID 17

In-Game Description

"Cannot be poisoned. Halves damage taken from Poison moves."

Extended In-Game Description

For use in Elite Redux extended ability UI (280-300 chars max)

Immunity completely prevents poisoning from all sources including Toxic. Additionally reduces all Poison-type damage by 50%, providing both status and type resistance. If poisoned when gaining this ability, the poison is immediately cured. Can be suppressed by Mold Breaker abilities.

Character count: 284

Detailed Mechanical Explanation

For Discord/reference use

Core Mechanics

Immunity provides dual protection against Poison through status immunity and damage reduction. Implementation in src/abilities.cc:

constexpr Ability Immunity = {
    .onDefensiveMultiplier =
        +[](ON_DEFENSIVE_MULTIPLIER) {
            if (moveType == TYPE_POISON) RESISTANCE(.5);
        },
    .onStatusImmune = +[](ABILITY_ON_STATUS_IMMUNE) -> int {
        CHECK(status & CHECK_POISON)
        return TRUE;
    },
    .breakable = TRUE,
    .removesStatusOnImmunity = TRUE,
};

Key Features

1. Poison Status Immunity:

   • The onStatusImmune callback prevents all forms of poisoning
   • Checks for CHECK_POISON status flag and returns TRUE to block it
   • Includes regular poison and badly poisoned (Toxic) status

2. Poison Damage Reduction:

   • The onDefensiveMultiplier callback reduces Poison-type damage by 50%
   • RESISTANCE(.5) multiplies incoming Poison damage by 0.5
   • Stacks with other resistances (e.g., Steel-type's natural Poison resistance)

3. Ability Properties:

   • breakable = TRUE: Can be suppressed by Mold Breaker and similar abilities
   • removesStatusOnImmunity = TRUE: If already poisoned when gaining Immunity, the poison status is immediately removed

Sources of Poison Blocked

• Status Moves: Toxic, Poison Gas, Poison Powder
• Secondary Effects: Sludge Bomb's 30% poison chance, etc.
• Abilities: Poison Point, Effect Spore's poison chance
• Items: Toxic Orb, Poison Barb (status effect only)
• Other: Toxic Spikes hazards

Damage Calculation Examples

Against a neutral Poison-type move:

• Normal: 1.0x damage
• With Immunity: 0.5x damage

Against a super effective Poison-type move (e.g., vs Grass):

• Normal: 2.0x damage
• With Immunity: 1.0x damage

Stacking with Steel-type (0.5x from type + 0.5x from ability):

• Steel with Immunity: 0.25x damage from Poison moves

Pokémon with Immunity

Some examples include:

• Frillish (Water/Ghost): Has Immunity as a changeable ability option
  • Other options: Low Visibility, Clear Body
• Various other Pokémon have it as either changeable or innate ability

Strategic Implications

Defensive Value:

• Complete protection against Toxic stalling
• Significant bulk against Poison attackers
• Can switch into Toxic Spikes safely
• Removes existing poison when gained (e.g., via Skill Swap)

Team Support:

• Excellent on defensive pivots
• Valuable for stall teams vulnerable to Toxic
• Good on setup sweepers that fear poison chip damage

Interactions

1. With Mold Breaker:

   • Both poison immunity and damage reduction are suppressed
   • Pokémon with Mold Breaker can poison and deal full damage

2. With Corrosion:

   • Corrosion does NOT bypass Immunity
   • The status immunity still applies

3. With Type Changes:

   • If user becomes Poison-type, still takes 0.5x from Poison moves
   • If user becomes Steel-type, stacks to 0.25x damage

Competitive Usage Notes

• Excellent on bulky Water-types that fear Toxic
• Valuable on walls and defensive pivots
• Provides unique defensive profile against Poison coverage
• Can enable safer setup against Poison-types

Counters

• Mold Breaker users bypass both effects
• Other status conditions work normally
• Non-Poison offensive moves unaffected
• Ability suppression (Gastro Acid, etc.)

Synergies

• Pokémon weak to Poison appreciate the damage reduction
• Defensive cores benefit from Toxic immunity
• Setup sweepers can boost without poison chip
• Pairs well with Heal Bell/Aromatherapy support

Version History

Elite Redux enhanced Immunity significantly:

• Original games: Only prevented poison status
• Elite Redux: Added 50% Poison-type damage reduction

This makes Immunity a comprehensive anti-Poison ability providing both offensive and defensive benefits.