Teferi, Master of Time (276) [Core Set 2021 Prerelease Promos] Orc Wizard You may have Activated Sleeper

You may have Activated Sleeper enter the battlefield as a copy of any creature card in a graveyard that was put there from the battelfield this turn

That's precisely why they show up

Set: The Brothers' War Prerelease Promos Type: Sorcery Rarity: Rare Cost: {4}{G}{G} Choose two —

create that many tokens that are copies of it

Set: Introductory Two-Player Set Type: Creature — Boar Rarity: Common Cost: {4}{G} The version of this card features a Copyright date of © 1996

Teferi, Master of Time (276) [Core Set 2021 Prerelease Promos] Orc Wizard You may have Activated SleeperSet: Core Set 2021 Prerelease Promos Type: Legendary Planeswalker Teferi Rarity: Mythic Cost: {2}{U}{U} You may activate loyalty abilities of Teferi, Master of Time on any player's turn any time you could cast an instant. +1: Draw a card, then discard a card. 3: Target creature you don't control phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.) 10: Take two extra turns after this one.