Some of those attackers are Gardevoir CRE that can OHKO anything with its Brainwave attack or Zacian V CEL which can OHKO anything with its Storm Slash attack
Voltaic Key + Time Vault is beyond broken, to be sure, but some animals were not meant to be domesticated, and Vintage is one such beast
It is harder to play than both Counterspell and Cryptic and so it will probably see less play than either but it shouldn't be far behind
Create X 1/1 green Saproling creature tokens, where X is that artifact's mana value
In a format where everything was speed, speed, speed, Capsize single-handedly allowed blue to stay in the game, and eventually lock it up by returning two lands a turn to a hapless opponent's hand
You can chump block, then Saw in Half your about to die blocker and then get two copies for future blockage, which I like in planeswalker heavy brews to get three blockers from one removal spell