Bolas's Citadel + Commander's Sphere

Bolas's Citadel + Commander's Sphere Combos

2 known combos featuring both cards in Commander

Infinite damage Infinite lifegain Infinite lifegain triggers Infinite storm count Infinite lifeloss

Combo 1 with Doomsday + Aetherflux Reservoir + Black Sun's Zenith

Also requires: Doomsday Doomsday Aetherflux Reservoir Aetherflux Reservoir Black Sun's Zenith Black Sun's Zenith
Results: Infinite damage · Infinite lifegain · Infinite lifegain triggers · Infinite storm count
Steps
  1. Cast Doomsday by paying {B}{B}{B}, searching your library and graveyard for Bolas's Citadel, Aetherflux Reservoir, two other cards with mana value 2 or less, and Black Sun's Zenith, and then placing the remaining cards on top of your library in the order previously listed and losing half your life, rounded up.
  2. Activate Commander's Sphere's first ability by tapping it, adding one mana of any color.
  3. Activate Commander's Sphere's second ability by sacrificing it, causing you to draw a card.
  4. Cast Bolas's Citadel by paying {3}{B}{B}{B}.
  5. Cast Aetherflux Reservoir from your library by paying 4 life.
  6. Cast two other cards with mana value 2 or less.
  7. Aetherflux Reservoir triggers, gaining you 1 life for each spell you have cast this turn.
  8. Cast Black Sun's Zenith by paying 2 life and shuffling it into the library.
  9. Aetherflux Reservoir triggers, gaining you 1 life for each spell you have cast this turn.
  10. Repeat until your life total is 53 or greater.
  11. Activate Aetherflux Reservoir by paying 50 life, dealing 50 damages to any target.
  12. Repeat from step 8.
131 decks Colorless View on Commander Spellbook →

Combo 2 with Doomsday + Emergence Zone + Repay in Kind +1 more

Also requires: Doomsday Doomsday Emergence Zone Emergence Zone Repay in Kind Repay in Kind Lich Lich
Results: Infinite lifeloss
Show steps
  1. Cast Doomsday by paying {B}{B}{B}, searching your library and graveyard for Bolas's Citadel, Emergence Zone, Repay in Kind, Lich, and any other card, exiling all other cards from your graveyard and library, and then placing the remaining cards on top of your library in the order previously listed and losing half your life, rounded up.
  2. Activate Commander's Sphere by sacrificing it, drawing a card.
  3. Cast Bolas's Citadel by paying {3}{B}{B}{B}.
  4. Play Emergence Zone from the top of your library.
  5. Activate Emergence Zone by paying {1}, tapping, and sacrificing it.
  6. Cast Repay in Kind from the top of your library by paying seven life.
  7. Holding priority, cast Lich from the top of your library by paying 4 life.
  8. Lich entering the battlefield, causing you to lose life equal to your life total.
  9. Resolve the Repay in Kind, causing each player's life total to become equal to the lowest life total among all players.
23 decks Colorless View on Commander Spellbook →
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Combo Burn Cantrip Removal Commander

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Bolas's Citadel → All Bolas's Citadel Combos → Commander's Sphere → All Commander's Sphere Combos →
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