Mirrormade + Phyrexian Altar Combos

3 known combos featuring both cards in Commander

Infinite card draw Near-infinite ETB Infinite draw triggers Near-infinite storm count Near-infinite LTB

Combo 1 with Emry, Lurker of the Loch + Genesis Chamber

Results: Infinite colored mana · Infinite creature tokens · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers · Infinite self-mill · Infinite storm count
Steps
  1. Cast Emry by paying {U} plus commander tax (if applicable).
  2. When Emry enters the battlefield, it triggers itself, Genesis Chamber, and the copy of Genesis Chamber.
  3. Resolve both Genesis Chamber triggers, creating two 1/1 Myr artifact creature tokens.
  4. Resolve Emry's ability, milling four cards.
  5. Activate Phyrexian Altar by sacrificing Emry, adding {U}.
  6. Send Emry from the graveyard to the command zone as a state-based action.
  7. Repeat any number of times.
  8. Once you have infinite creature tokens, you may activate Phyrexian Altar any number of times.

Combo 2 with Tamiyo, Inquisitive Student // Tamiyo, Seasoned Scholar + Myth Unbound

Results: Infinite card draw · Near-infinite ETB · Infinite draw triggers · Near-infinite storm count · Near-infinite LTB · Near-infinite death triggers · Near-infinite sacrifice triggers · Near-infinite commander casts
Show steps
  1. Activate Phyrexian Altar by sacrificing Tamiyo, adding {U}.
  2. Choose to return Tamiyo to the command zone from your graveyard.
  3. Myth Unbound and Mirrormade trigger, causing you to draw two cards.
  4. Cast Tamiyo from the command zone by paying {U}.
  5. Repeat.

Combo 3 with Rograkh, Son of Rohgahh + Myth Unbound

Results: Infinite card draw · Infinite draw triggers · Near-infinite commander casts · Near-infinite ETB · Near-infinite storm count · Near-infinite LTB · Near-infinite death triggers · Near-infinite sacrifice triggers · Near-infinite colored mana
Show steps
  1. Activate Phyrexian Altar by sacrificing Rograkh, adding one mana of any color.
  2. Choose to have Rograkh return to the command zone from your graveyard.
  3. Both copies of Myth Unbound trigger, causing you to draw two cards.
  4. Cast Rograkh from the command zone by paying {0} due to the cost reductions from both copies of Myth Unbound.
  5. Repeat.
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