Teferi, Master of Time (275) [Core Set 2021] Gatecrash You can only Special Summon

You can only Special Summon "Noble Knight Custennin" once per turn this way

if that spell's mana cost or that ability's activation cost contains {X}

Set: Duel Terminal 6 Card type: Normal Spell Rarity: Common Attack: 0 Defense: 0 If you control no monsters: Target 2 "Gusto" monsters in your Graveyard

Create a Treasure token

Teferi, Master of Time (275) [Core Set 2021] Gatecrash You can only Special SummonSet: Core Set 2021 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.