Aetherflux Reservoir [Kaladesh]

Aetherflux Reservoir [Kaladesh]Set: 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.

Set: Stronghold Type: Enchantment Rarity: Rare Cost: {1}{B}{B}{B} Whenever a creature you control dies

Set: Alpha Edition Type: Creature — Elemental Rarity: Uncommon Cost: {3}{U}{U} Flying

it's nearly invisible—until it exhales

Set: League Tokens 2014 Type: Token Enchantment Creature — Soldier Rarity: Common

put two +1/+1 counters on it or create two 1/1 colorless Servo artifact creature tokens

exile a card from your hand

Set: Duel Decks Anthology Type: Tribal Sorcery — Elf Rarity: Uncommon Cost: {3}{G} Create a 1/1 green Elf Warrior creature token for each Elf you control

Set: Planechase Anthology Tokens Type: Token Creature — Dragon Rarity: Common Flying

Set: Commander 2011 Type: Sorcery Rarity: Uncommon Cost: {X}{R}{G} Savage Twister deals X damage to each creature

then stands guard as they dry

Set: Magic 2013 Type: Artifact Rarity: Uncommon Cost: {4} Tap two untapped artifacts you control: Untap target artifact

"Power is wasted on the weak