Aetherflux Reservoir [Mystery Booster] Fifth Dawn Suddenly one of these boulders

Suddenly one of these boulders toppled from its perch and sprouted gargantuan wings

" —Lao Tzu

(Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control

Set: Commander 2011 Type: Instant Rare Cost: {U} Counter target instant or sorcery spell unless its controller pays {1}

Aetherflux Reservoir [Mystery Booster] Fifth Dawn Suddenly one of these bouldersSet: Mystery Booster Type: Artifact Rarity: Rare Cost: {4} Whenever you cast a spell, you gain 1 life for each spell you've cast this turn. Pay 50 life: Aetherflux Reservoir deals 50 damage to any target. While most power is used for ordinary, everyday tasks, one shouldn't underestimate its potential for the extraordinary.