1 Miirym, Sentinel Wyrm
These two pairs of shoes have gotten a lot better again, and most decks will run at least one of them
P/T Number 7 Language English Legal Formats Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Timeless, Vintage Not Legal Formats Alchemy, Pauper, Standard Rulings (7/23/2021) Cloister Gargoyle's last ability works even if it wasn't on the battlefield when you completed a dungeon
Disa the Restless Disa the Restless gives a niche creature typelhurgoyfsan ideal lord
Compare that to the cost of sourcing a genuine card for a deck you're still testing
Put X +1/+1 counters on it, where X is two plus the total number of cards you own in exile and in your graveyard that are Oozes or are named Slime Against Humanity