Phyrexian Altar + Skirk Alarmist Combos

4 known combos featuring both cards in Commander

Infinite colored mana Infinite death triggers Infinite LTB Infinite sacrifice triggers Infinite ETB

Combo 1 with Missy + Intruder Alarm

Results: Infinite colored mana · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite untap of creatures · Infinite untap of creatures you control
Steps
  1. Activate Phyrexian Altar by sacrificing another nontoken nonartifact creature, adding one mana of any color.
  2. When the creature dies, Missy's first ability triggers, returning the creature from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature.
  3. When the creature enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  4. Activate Skirk Alarmist by tapping it, turning the creature face up.
  5. Repeat.

Combo 2 with Missy + Thornbite Staff

Results: Infinite colored mana · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Activate Phyrexian Altar by sacrificing another nontoken nonartifact creature, adding one mana of any color.
  2. When the creature dies, Missy's first ability and Skirk Alarmist trigger.
  3. Resolve the Missy ability, returning the creature from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature.
  4. Resolve the Skirk Alarmist trigger, untapping it.
  5. Activate Skirk Alarmist by tapping it, turning the creature face up.
  6. Repeat.

Combo 3 with Ashcloud Phoenix + Intruder Alarm

Results: Infinite colored mana · Infinite death triggers · Infinite ETB · Infinite LTB · Infinite mana creatures you control can produce · Infinite sacrifice triggers · Infinite untap of creatures · Infinite untap of creatures you control
Show steps
  1. Activate Phyrexian Altar by sacrificing Ashcloud Phoenix, adding one mana of any color.
  2. When Ashcloud Phoenix dies, it triggers, returning itself from your graveyard to the battlefield face down.
  3. When Ashcloud Phoenix enters the battlefield, Intruder Alarm triggers, untapping all creatures.
  4. Activate Skirk Alarmist by tapping it, turning Ashcloud Phoenix face up.
  5. Repeat.

Combo 4 with Yedora, Grave Gardener + Granite Witness

Results: Infinite colored mana · Infinite death triggers · Infinite landfall triggers · Infinite LTB · Infinite sacrifice triggers
Show steps
  1. Activate Phyrexian Altar by sacrificing Granite Witness, adding one mana of any color.
  2. When Granite Witness dies, Yedora triggers, returning Granite Witness from your graveyard to the battlefield face-down as a Forest land.
  3. Activate Granite Witness by tapping it, adding {G}.
  4. Activate Skirk Alarmist by tapping it, turning Granite Witness face-up.
  5. Granite Witness triggers, untapping Skirk Alarmist.
  6. Repeat.
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