Meteor Golem Spine of Ish-Sah, but can't target lands (why???), doesn't have a neat built-in recursion trigger, buuuut it's a creature so that opens up more synergies
The key difference here is you cant sacrifice just anything
Wilds of Eldraine , The Lost Caverns of Ixalan , and Bloomburrow each had one rare or mythic rare turtle, for example, while TMNT obviously flooded the game with them
Most of them were just too slow to keep up with Night March decks or had a Weakness to those pesky Joltik or Pumpkaboo
The Crash Heads move that is featured on Hydreigon ex deals 200 damage and forces opponents to discard the top three cards from their deck, meaning many are looking forward to making decks that support this move
It also can continue copying creatures, gaining their power, toughness, and abilities every turn