Wigglytuff Crest- Doubles the holder's attack stat, but the holder cannot faint a target unless the target has directly damaged the holder. After all, why faint a potential Friend? Meowstic Crest- If held by Male Meowstic, Prankster moves receive +2 priority instead of +1, and work on Dark Types. If held by a Female Meowstic, uses holder's speed stat in Special Attack damage calculations. Lycanroc Crest- If held by Midnight, the holder becomes part dark type and their normal type moves become dark type moves. If held by Midday, the holder becomes part ground type, with the same bonuses. If held by Dusk, the holder becomes part fire type, with the same bonuses. Bellossom Crest- The holder's dancing moves activate twice. Alcremie Crest- Based on the holder's type of Sweet, provides a different boost.
Strawberry Sweet: The holder's draining moves deal more damage and absorb more health.
Berry Sweet: When the holder hits a target or is struck by a target, the target's attacking stat is decreased.
Love Sweet: The holder's clerical moves (Aromatherapy, etc) have increased priority and bypass Taunt/Torment.
Star Sweet: Upon entry, all of the holder's stats are raised by 1.
Clover Sweet: The holder's atk stat is always equal to their spatk stat, including boosts etc.
Flower Sweet: Holder's speed and special attack are 1.5x in Sun.
Ribbon Sweet: Holder has an innate +2 to their crit ratio.
Dubwool Crest- Nullifies the drawback of Fluffy. The move "Body Press" becomes normal type when used by this pokemon. Morpeko Crest- Holder's stats vary wildly when in different Hunger form, with the usual form being bulky and hangry being offensive. Quagsire Crest- The holder becomes golden in appearance, reflecting it's godly nature. Gains complete immunity to grass type moves. It's defensive stats are increased when in rain. Rapidash Crest- If held by Kantonian Rapidash, increases the damage of "charging" moves, such as Wild Charge, Flare Blitz, etc. If held by Galarian Rapdiash, increases the user's atk when using the move Calm Mind and increases the chances of additional effects occurring (like Serene Grace)