Slowpoke_

Sunflora Crest - Sets up sunny day when entering the battle, whilst also making its speed equal to its spatk. (By giving the speed Sunflora desperately deserves, as well as applying sunny day upon entering, it enables Sunflora to actually use its abilities and moves efficiently in battle.) Kricketune Crest - Gives it +2 atk and +2 speed, whilst also confusing the target upon entering. (Without having the attack and speed to actually be useful in battle Kricketune is unable to pull off many of its moves due to its frail defences, that is also why confusing the target upon entering is useful as it gives Kricketune a chance to get a move off.) Lumineon Crest - Gives it +1spatk, whilst also making it water/fairy, as well as allowing it to learn moonblast once the crest is given to the mon. (Lumineon is a mon who really deserves a crest, as it is practically unusable in its current state, by making it water/fairy as well as giving it some sort of fairy stab, this could allow for some variety and power in its moveset as currently it only learns a few powerful moves, that is why moonblast was suggested. As well as these changes, by giving Lumineon +1 to its spatk when entering the battle, it enables it to actually use its spatk stats semi-efficiently.) Toxapex Crest - Swap its offensive stats with its defensive stats. (By swapping these stats around it would offer a new way of playing, it would make Toxapex a slow glass cannon, which, when paired with trick room, could be deadly.)