Cloud Key + Mourning Combos

2 known combos featuring both cards in Commander

Infinite +1/+1 counters on a creature Infinite damage Infinite lifegain Infinite lifegain triggers Infinite storm count

Combo 1 with K'rrik, Son of Yawgmoth + Aetherflux Reservoir

Also requires:

K'rrik, Son of Yawgmoth

Aetherflux Reservoir

Results: Infinite +1/+1 counters on a creature · Infinite damage · Infinite lifegain · Infinite lifegain triggers · Infinite storm count

Steps

Cast Mourning by paying 2 life, targeting K'rrik.
Aetherflux Reservoir and K'rrik trigger.
Resolve the K'rrik trigger, putting a +1/+1 counter on it.
Resolve the Aetherflux Reservoir trigger, causing you to gain an amount of life equal to your storm count.
Resolve Mourning, attaching it to K'rrik.
Activate Mourning by paying 2 life, returning it to your hand from the battlefield.
Repeat.
Once you have infinite life, you may use Aetherflux Reservoir's ability to deal infinite damage to any target(s).

4 decks Colorless View on Commander Spellbook →

Also requires:

K'rrik, Son of Yawgmoth

Pontiff of Blight

Results: Near-infinite lifegain · Near-infinite lifeloss · Near-infinite lifegain triggers · Near-infinite storm count

Show steps

Cast Mourning by paying 2 life if able, or {B} otherwise.
Each creature you control's extort ability triggers.
Resolve the first extort trigger, causing you to pay 2 life if able, or {W/B} otherwise, causing each opponent to lose 1 life and you to gain that much life.
Repeat step 3 for each remaining extort trigger.
Resolve Mourning, attaching it to a creature you control.
Activate Mourning by paying 2 life, returning it from the battlefield to your hand.
Repeat until an opponent loses the game due to having 0 or less life.

3 decks Colorless View on Commander Spellbook →

📚 Learn more:

Combo Burn

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