Quoted By:
Stoic: Even though the flavor text will still appear, the user won't actually be affected by debuffs, infatuation, paralysis, or confusion.
Refractive: Special attacks directed at the user will result in the attacking side being hit with the same attack, dealing half damage. Stallfags rejoice as using Heal Pulse or Pollen Puff on a Refractive ally will indeed perform an AoE recovery spell.
Carnivorous: Biting attacks restore HP to the user. Leech Life restores the full amount of damage dealt. The user will take slightly more damage if it sucks on a user with Liquid Ooze.
Play Fair: As long as this mon is on the field, all attacks will deal neutral damage regardless of type matchups. Everyone also gets immunity to crits and OHKOs. The user's side gets a speed boost if there's a speed tie, so long as that user was sent out before the opponent could send out a PF user of their own. If both sides are completely speed-tied AND both sides happened to lead with a PF user, the players will be met with a cute line of flavor text "<the PF users> can't come to an agreement!" and the ability will be completely negated until one of the users are taken off the field.
Kleptomaniac: The user has a random chance of using the opponent's held item if it's a consumable, or holding it if it's a passive. If the user was already holding an item, well fuck you now it's holding two! Three if it's a double battle! Thief and Covet deal double damage upon stealing the opponent's item AND this breaks through Sticky Hold. All that being said, the ability is exclusive to Delibird.
On an unrelated note, singles are for tools.