2UB, Return an unblocked attacking Rogue you control to its owner's hand: Put Zareth San, the Trickster from your hand onto the battlefield tapped and attacking
Definitely one to plan for
You can tell the top-down design here, where someone asked: If I design a card to be a moat, what would it look like? It might not be the most powerful, especially when decks dont necessarily need to attack to win, but its still cool and combines well with cards that enable flying
Humans are a big one, present on almost every plane in the MTG Multiverse (but not Bloomburrow !)
Still, there are always ways to power down a deck for a slower table
It will continue to block