Archenemy, But Commander Archenemy is returning to MTG as part of the preconstructed Commander decks for Duskmourn: House of Horror
Its a triggered ability, so once it goes on the stack, youll still get the effect for the turn (short of a Voidslime and friends) even if the Unicorn leaves the battlefield
Faceless Haven is essentially worth splashing for in every monocolor aggro deck, and the Battle for Zendikar cycle of Shambling Vents / Needle Spires / Hissing Quagmire / Wandering Fumarole / Lumbering Falls saw widespread play during its time in the format
This Basic Dark-type card features the Vengeance Fletching and Speed Wing attacks with a striking full-art style illustration by hncl
Token copiers like Rhys the Redeemed, Second Harvest, Renewed Solidarity, and Redoubled Stormsinger are basically just mass token generators
Mostly however you are hoping to just sit on a card until you combo kill them that bit sooner due to your extra dork and their lack of disruption, or you force them to kill a weak dork that gains you some triggers perhaps and works to protect later high value dorks
