Decks I would recommend Mawile to be played in: Lugia VSTAR, Mew VMAX, Control Skwovet Sometimes you dont wanna deck out, and Skwovet [Scarlet and Violet] can help you get out of some awkward situations
Maybe you're a cocky trainer
without cards like Faithless Looting and Collective Brutality, where would cards like Hogaak, Arisen Necropolis and Necromancy be
Heralds Horn Herald's Horn is absurd in typal decks, making every creature you cast cost 1 less mana
Giving all your elves the mana-producing ability is another avenue to explore when you have a bunch of useless 1/1 tokens sitting on the battlefield, which goes very well with go-wide elf cards like Galadhrim Ambush
However, this comes with a big asterisk: youll never get the most cutting edge products from Costco