Aetherflux Reservoir [Kaladesh] Fish (Your devotion to a color

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

As long as the top card of your library is black

if that spell's mana cost is {3}{U}{U}

" Put target creature card from a graveyard onto the battlefield under your control and attach Necromancy to it

Set: Fifth Edition Type: Artifact Rarity: Rare Cost: {1} Mana Vault doesn't untap during your untap step

Aetherflux Reservoir [Kaladesh] Fish (Your devotion to a colorSet: Kaladesh 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.