mtg japanese booster box Magic: The Gathering - - The Brothers War - Collector one of Magics most celebrated formats Wilds of Eldraine Japanese Collector

Cloud of Darkness Rarity: Uncommon TYPE: Legendary Creature SUBTYPE: Avatar CMC: 5 Mana cost: USD: $0.13 EUR: 0.08 TIX: 0.03 EDHREC RANK: 16858 (3/3) Flying Particle Beam When Cloud of Darkness enters, target creature an opponent controls gets -X/-X until end of turn, where X is the number of permanent cards in your graveyard

These are modal instants that have a flexible mana cost

Make the range of cards that fulfill the sacrifice effect matter, be in black, and figure a way to recover this and cast it again

And it has upside beyond that because you can put the counter elsewhere or cycle it early

however, area of effect (AOE) abilities can still affect them

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