Strixhaven Stadium is one of the weirder mana rocks out there, creating a kind of mini-game that can instantly knock an opponent out if you play it right
Im not sure if Id jump through too many hoops to try to break this card, but in any deck where youre running enough pinpoint removal to destroy a creature, or sacrifice outlets to kill your own creatures, this might be worth a slot, especially if youre also running token synergies too, like Chatterfang, Squirrel General or Grismold, the Dreadsower
Spells like Preordain and Foresee help to make sure that the top of your deck is the card that you'll need
Throwing in not only a cantrip but also a card quality mechanism to this outstanding defensive body and you are onto a winner
The boost it provides is significant, and with eight Cartouches in your deck its very easy to rebuy it over and over until your opponent is dead