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Aetherflux Reservoir

Artifact

Whenever you cast a spell, you gain 1 life for each spell you've cast this turn.
Pay 50 life: This artifact deals 50 damage to any target.

CMC
4
Mana cost
{4}
Color identity
C
Rarity
rare
Set
Kaladesh Remastered
Price
—
EDHREC rank
#367
Buy on TCGplayer
Aetherflux Reservoir card art
Aetherflux Reservoir turns a life-gain or storm-count game into a 50-damage cannon — cast enough spells in a turn and you're killing players one by one at instant speed. The cost is a four-mana artifact that does nothing until you've built a critical mass of spells or life, which means it's a liability in slow or spell-light shells but an outright finisher alongside engines like Exquisite Blood or under a commander like Gwenom, Remorseless.

Best Commanders

Commanders with the highest synergy

01
Gwenom, Remorseless

Gwenom, Remorseless

72.9% of decks · synergy 0.63

Gwenom, Remorseless generates life at scale through her Symbiote mechanic, and Aetherflux Reservoir converts that stockpile directly into lethal shots — 73% of Gwenom decks include it because it's the cleanest way to cash in accumulated life for damage.

02
Noctis, Prince of Lucis

Noctis, Prince of Lucis

67.9% of decks · synergy 0.60

Noctis, Prince of Lucis fuels a high-spell-count gameplan that naturally stacks the storm-like triggers on Aetherflux Reservoir, letting the deck win through life gain rather than combat — 68% inclusion reflects how central the Reservoir is to the strategy.

03
Fblthp, Lost on the Range

Fblthp, Lost on the Range

65.2% of decks · synergy 0.59

Fblthp, Lost on the Range chains cantrips and low-cost spells at a pace that rapidly inflates Aetherflux Reservoir's life-gain triggers, turning a stream of card-draw spells into a kill condition by mid-game.

04
Oloro, Ageless Ascetic

Oloro, Ageless Ascetic

62.4% of decks · synergy 0.55

Oloro, Ageless Ascetic generates free life every upkeep from the command zone, giving Aetherflux Reservoir a steady resource base even in games where spellcasting stalls — 62% inclusion across more than 20,000 decks makes this one of the card's defining homes.

05
Firesong and Sunspeaker

Firesong and Sunspeaker

57.1% of decks · synergy 0.53

Firesong and Sunspeaker turns burn spells into life gain, which Aetherflux Reservoir then converts back into damage, creating a recursive loop where every red instant or sorcery both threatens and charges the Reservoir simultaneously.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern legal
pioneer legal
standard not legal
vintage legal
pauper not legal
oathbreaker legal

Aetherflux Reservoir is a Commander card first and almost exclusively — the format's longer games, multiplayer damage requirements, and life-gain synergy commanders give it the runway it needs to matter. In Modern and Pioneer it's legal but essentially unplayed; four mana for a conditional win condition can't compete in formats where games end on turn four and opponents start at 20 life. Legacy and Vintage have access to it but no meaningful shell has adopted it, since faster combo lines exist at every turn count. Oathbreaker is the one non-Commander format where it sees occasional play, because the lower starting life total and commander-centric synergies mirror what makes it work in Commander.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Pricing data for Aetherflux Reservoir isn't currently available in this snapshot, so check Scryfall or TCGPlayer for the live number before buying. It has seen multiple reprints and typically sits in an accessible range given its ubiquity across life-gain and storm strategies.

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Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.