Pressure

Effect:

Moves targetting this Pokémon use one extra PP. This ability stacks if multiple targets have it. This ability still affects moves that fail or miss. it does, however, affect single-targeted ally moves aimed at this Pokémon, ally moves that target all other Pokémon, and opponents' moves that target the entire field. If this ability raises a move's PP cost above its remaining PP, it will use all remaining PP. When this Pokémon enters battle, all participating trainers are notified that it has this ability.

Pressure is introduced in Gen 3: