Arcbound Tracker + Deadeye Navigator + The Ooze + Urza, Lord High Artificer

Mana needed: {2}{U}{U}

UR identity

Commander legal

The 4 combo pieces

How to execute it

  1. Activate Arcbound Tracker by paying {1}{U}, blinking it.
  2. Arcbound Tracker leaves and reenters the battlefield, causing it to enter with +1/+1 counters due to its modular ability, and triggering The Ooze and Deadeye Navigator's soulbond ability.
  3. Resolve Deadeye Navigator's trigger, repairing it and Arcbound Tracker
  4. Resolve The Ooze's trigger, creating a Mutagen token for each +1/+1 counter that was on Arcbound Tracker when it left the battlefield.
  5. Activate Urza's first ability twice by tapping Arcbound Tracker and a Mutagen, adding {U}{U}.
  6. Repeat.

What the combo produces