But maybe Im just scared of the unknown
Urza block would push this to its limits with Vault legal in Standard as well as cards like Grim Monolith, Mox Diamond, Worn Powerstone, and Thran Dynamo

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And since its a Tera Pokmon, it also wont take any damage while its on your Bench (but be careful of effects that place damage counters, like Dragapult exs Phantom Dive, since those will ignore this effect)
STONECOIL SERPENT No, youre reading this correctly this is not an Ikoria spoiler