The disgustingly named Magic: The Gathering card Rain of Gore has seen a 156% price spike over the last few weeks
Thanks to its indestructibility you can safely swing away with Zetalpa, dealing a good chunk of damage and still holding it up as a blocker in case your opponent wants to snap back at you
The Equipment mode where you tap a creature already on the battlefield to make a bigger threat is still there for the turns you arent casting something else as a fail-safe or something else you can maximize
Technically, it's just a Constructed format with some particular rules that set it apart from things like Standard or Modern
Card Set(s) -CARRYING ON HIS WILL- [OP-13] CARD VIEW OP13-103 | C | CHARACTER Gyogyo Attribute Wisdom Block icon 4 Card Set(s) -CARRYING ON HIS WILL- [OP-13] CARD VIEW OP13-104 | R | CHARACTER Kouzuki Hiyori Attribute Wisdom Block icon 4 Type Land of Wano/Kouzuki Clan Effect [Blocker] [On K type, this Character gains [Rush] during this turn
You obviously need some fodder, but what deck doesnt have a spare Clue or Treasure floating around these days