Mana Drain (Borderless Alternate Art) [Double Masters 2022] HER019-P sacrifice it unless you pay

sacrifice it unless you pay its echo cost

you may play that card without paying its mana cost

Kefnet the Mindful can't attack or block unless you have seven or more cards in hand

Set: Strixhaven: School of Mages Prerelease Promos Type: Legendary Creature — Elder Dragon Rarity: Mythic Cost: {5}{R}{W} Flying

Mana Drain (Borderless Alternate Art) [Double Masters 2022] HER019-P sacrifice it unless you paySet: Double Masters 2022 Type: Instant Rarity: Mythic Cost: {U}{U} Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value. "I suppose you've never heard of conservation of energy."