Immunity

Summary

Immunity is a Pokémon ability introduced in Generation III.

Effect:

• Prevents the Pokémon with this ability from being poisoned, including both regular poison and bad poison (toxic).
• If a Pokémon already poisoned in some way gains this ability during a battle, it will be cured of its poison status.
• The ability remains active for as long as the Pokémon retains it, either through battle mechanics or changes made via moves or abilities.

In Battle:

• Offers significant defensive utility, especially against opponents relying on poison-based strategies.
• Beneficial for Pokémon facing Toxic stall tactics, as they cannot be worn down through poison damage over time.
• Allows the Pokémon to switch into anticipated poison-inducing moves without risk.
• Synergizes well with Pokémon that rely on longevity and need to remain status-free to function effectively.

Pokémon with this Ability:

• Snorlax (standard ability)
• Gligar (standard ability, prior to evolving into Gliscor)
• Zangoose (standard ability)
• Swalot (standard ability)

Competitive Use:

• Immunity is particularly valuable in competitive play as a counter to Toxic, a common move aimed at breaking down defensive Pokémon.
• Often found on bulky or defensive Pokémon that can capitalize on their immunity to poison to wall opponents.
• Enables safe switch-ins against known poison-users without fear of debilitating status conditions.
• Frequently seen in formats where status conditions are prevalent and can turn the tide of battle.

Interesting Facts:

• Immunity is one of the few abilities that provide a complete safeguard against a specific status condition, emphasizing its strategic value.
• The ability's name reflects its straightforward function, providing a complete block against poison.
• Unlike some abilities that require activation conditions, Immunity is always active, offering consistent protection throughout a battle.
• Despite its simple premise, it can significantly impact battles, especially in environments where Toxic is a common threat.