Hopefully their not too broken or anything
Luvdisc Crest: Gives it Regenerator and Cute Charm, makes base Spa & HP same as base Spe
Cramorant Crest: Rock attacks does neutral damage, gives a Power Herb effect to Dive and Fly
Dubwool Crest: Gives it Scrappy, small boost to Spd
Boltund Crest: Reverses physical and special moves (to make use of competitive)
Stonjourner Crest: Increase power of its moves by 30% (make power spot works on itself)
Eiscue Crest: Makes Ice Face works on special moves and/or Ice Face always restored when its hailing at the end of each turn
Morpeko Crest: Aura Wheel does both Electric and Dark damage at the same time but Morpeko becomes pure electric/dark in full belly/hangry mode respectively
Perrserker Crest: Calculates damage taken by Special moves using Def (gives all special attacks against it a psyshock effect)
Inteleon Crest: Gives it Super Luck in addition to its current ability, Physical attacks use its Special Attack stat rather than its Attack stat (meant to use in addition with Sniper)
Cinderace Crest: Swaps Atk with Spa
Rillaboom Crest: Replaces its ability with Punk Rock, increase base Spa by 10
Watchog Crest: Reduces damage taken from Pokémon moving before it by 30% and sets Trick Room upon entering the field