Aetherflux Reservoir [Kaladesh Prerelease Promos] Modern Masters 2017 if it's on the battlefield

if it's on the battlefield

They become 6/6 Elemental creatures

lands tapped for mana produce mana of the chosen color instead of any other color

Set: Friday Night Magic 2004 Type: Creature — Human Cleric Rarity: Rare Cost: {W} {T}: Target creature you control gains protection from the color of your choice until end of turn

if you cast it from your hand

Aetherflux Reservoir [Kaladesh Prerelease Promos] Modern Masters 2017 if it's on the battlefieldSet: Kaladesh Prerelease Promos 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.