Grand Architect + Karn, the Great Creator + Staff of Domination

Mana needed: {U}

U identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Karn's first loyalty ability by putting a loyalty counter on it, causing Staff of Domination to become an artifact creature until end of turn.
  2. Activate Grand Architect's first ability by paying {U}, causing Staff of Domination to become blue until end of turn.
  3. Activate Grand Architect's second ability by tapping Staff of Domination, adding {C}{C} that can only be spent to cast artifact spells or to activate abilities of artifacts.
  4. Activate Staff of Domination's first ability by paying {1}, untapping it.
  5. Repeat from step 3.
  6. Once you have infinite mana, you may instead tap Staff of Domination using its other abilities if it does not have summoning sickness.

What the combo produces