I like the idea of your list here, you might get a kick out of my Pavel the Mighty, Hero We Deserve list, it's a Chaos deck that overflows with pet cards
Our top sorcery is also...pricey since it's on the Reserved List, but it costs just three, and then everyone shuffles their deck, graveyard and hand and draws a brand new hand
1 "Wildcard" slot that can be a card of any rarity, from common to a borderless mythic
Commander Qty: 1 Price: 0.39 Nadaar, Selfless Paladin Vigilance Whenever Nadaar enters or attacks, venture into the dungeon
Mana Confluence #115 (Galaxy Foil) Market Price: $192.02 Mana Confluence is one of the best lands available if you're playing a multi-color deck, especially once you start reaching three or more colors
Yawgmoth isnt quite worth the price of his good counterpart, but with a $12 pricetag, this is still a pull you should be happy to find in a Final Fantasy Play Booster