In Extended Dredge, Bloodghast was a card that could be milled into the graveyard with dredge, come back from the graveyard for free with landfall, possibly do some attacking (dealing with four Bloodghasts can actually be super annoying because they just keep coming back), and in the late game make an amazing combo with Bridge from Below and Dread Return, generating a ton of Zombies when they are sacrificed and then returning to the battlefield for free
Honorary Mention: Rahilda, Wanted Cutthroat / Rahilda, Feral Outlaw This mention is only honorable if you use the command zone on Arena, namely, in Brawl with it's Historic card pool
The copy will resolve before the original ability does
BPhillipYork: A spawn doubler, for go-wide Eldrazi spawn/scion decks an important piece, but also just generally useful for generating mana to cast even more big fatties
The Ur-Dragon, with its full spectrum of colors and a beloved creature typing, is an undeniably fun commander
Set: Universes Beyond: Warhammer 40,000 Sealed Release Date: 2022-08-12