Halo Fountain + Karn, the Great Creator + Phyrexian Altar

Mana needed: {W}

W identity

Commander legal

The 3 combo pieces

What must be in place

Halo Fountain does not have summoning sickness.

How to execute it

  1. Activate Karn's first loyalty ability by putting a loyalty counter on it, causing Halo Fountain to become an artifact creature until end of turn.
  2. Activate Halo Fountain's first ability by paying {W}, tapping it and untapping it, creating a 1/1 Citizen creature token.
  3. Activate Phyrexian Altar by sacrificing the Citizen, adding {W}.
  4. Repeat from step 2.

What the combo produces