japanese mew pokemon card Full Art/Mew 1st Edition (017) 2016 Mythical & Legendary Dream Shine Collection have for your premier collection. Mew ex - 205/165 -

Roaring Moon ex get's a beautiful sketched art style SIR that can only be found in Prismatic Evolutions

Apart from mutate cards to trigger that ability, I guess you could use Stuffy Doll and Brash Taunter, or fill your deck with cards that grant abilities to your commander like backgrounds and the legendary familiars (Kediss, Falthis, et al)

That being said, there are cheaper ways to play and plenty of resources for making budget decks, especially for Commander

Burn being a beloved strategy thats been around for a long time, Wizards of the Coast has printed some burn commanders to helm your deck and bring burn up to speed