Grinning Ignus + Mairsil, the Pretender + Sneak Attack

Mana needed: {R}

UBR identity

Commander legal

The 3 combo pieces

What must be in place

Grinning Ignus exiled with a cage counter on it.
Any artifact or creature that can produce red mana exiled with a cage counter on it.

How to execute it

  1. Activate Sneak Attack by paying {R}, putting Mairsil onto the battlefield.
  2. Activate Mairsil using artifact or creature that can produce {R} by tapping it, adding {R}.
  3. Activate Mairsil using Grinning Ignus by paying {R} and returning it to your hand, adding {C}{C}{R}.
  4. Repeat.

What the combo produces