If a Pokémon with this Ability uses a move that makes contact, there is a 30% chance the target will become poisoned.
Relevant Code Points
Function 0x0225708C currently only checks for abilities owned by the defending battler, but can be modified to also check for abilities owned by the attacking battler. A branch should be added in the case that the attacker has Poison Touch.
Documentation
https://bulbapedia.bulbagarden.net/wiki/Poison_Touch_(Ability)
Relevant Code Points
Function
0x0225708Ccurrently only checks for abilities owned by the defending battler, but can be modified to also check for abilities owned by the attacking battler. A branch should be added in the case that the attacker has Poison Touch.