Aetherflux Reservoir [Kaladesh] Aura Set: Force of the Breaker

Set: Force of the Breaker Card type: Effect Monster Rarity: Ultimate Rare Attack: 2400 Defense: 1000 When this card is Tribute Summoned

That targets gains 300 ATK and DEF

Numsgil did in Blog

during either player's turn: You can detach 1 Xyz Material from this card to target 1 card on the field

Aetherflux Reservoir [Kaladesh] Aura Set: Force of the BreakerSet: 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.