Poison creates ongoing pressure because it damages the target at the end of turns and can force it to heal, switch, or play more aggressively. Badly poisoned targets traditionally take increasing damage over time, though exact mechanics depend on generation. Poison is especially useful against bulky Pokémon that rely on repeated recovery, but Poison and Steel types often have important immunities, and many abilities or items can prevent or remove status. Do not use poison automatically against every defensive target; check its type, Ability, and possible healing. A team should also have a plan for handling poison on its own key members.
