Teferi, Master of Time (275) [Core Set 2021] Alliances Whenever a player casts a

Whenever a player casts a spell with mana value equal to the number of charge counters on Chalice of the Void

Set: Legends Type: Sorcery Rarity: Rare Cost: {2}{B}{B} Exile All Hallow's Eve with two scream counters on it

Set: Dominaria Prerelease Promos Type: Legendary Creature — Elf Druid Rarity: Rare Cost: {2}{G} Whenever another Elf enters the battlefield under your control

Set: Mythic Edition Type: Legendary Planeswalker — Bolas Rarity: Mythic Cost: {4}{U}{B}{B}{R} +3: Destroy target noncreature permanent

Teferi, Master of Time (275) [Core Set 2021] Alliances Whenever a player casts aSet: 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.