Crime Novelist + Goblin Engineer + Intruder Alarm

Mana needed: {R}

UR identity

Commander legal

The 3 combo pieces

What must be in place

You control a nontoken artifact creature with mana value 3 or less.
You have an artifact creature card in your graveyard with mana value 3 or less.

How to execute it

  1. Activate Goblin Engineer by paying {R}, tapping it and sacrificing a nontoken artifact creature with mana value 3 or less, targeting another artifact creature with mana value 3 or less in your graveyard.
  2. When the artifact creature dies, Goblin Engineer and Crime Novelist triggers, putting a +1/+1 counter on it and adding {R}.
  3. Resolve the Goblin Engineer ability, returning the targeted artifact creature from your graveyard to the battlefield.
  4. When the artifact creature enters, Intruder Alarm triggers, untapping all creatures.
  5. Repeat.

What the combo produces