Errant, Street Artist + Galvanic Iteration + Reality Spasm

Mana needed: {3}{U}{U}{U}{R}

UR identity

Commander legal

The 3 combo pieces

How to execute it

  1. Cast Galvanic Iteration by paying {U}{R}, copying the next instant or sorcery spell you cast.
  2. Cast Reality Spasm by paying at least {3}{U}{U}, targeting at least three permanents and choosing the untap mode.
  3. Galvanic Iteration triggers, copying Reality Spasm, targeting at least three permanents.
  4. Holding priority, activate at least two mana-producing permanents you control by tapping them, adding at least {1}{U}.
  5. Activate Errant by paying {1}{U} and tapping it, copying the Reality Spasm copy, targeting Errant and at least two mana-producing permanents you control.
  6. Resolve the copy of Reality Spasm from step 3, untapping Errant and at least two mana-producing permanents you control.
  7. Repeat from step 4.

What the combo produces