Bloodspore Thrinax + Metalwork Colossus + The Ooze + Yahenni, Undying Partisan

BG identity

Commander legal

The 4 combo pieces

What must be in place

Noncreature artifacts you control have total mana value 11 or greater.

How to execute it

  1. Cast Metalwork Colossus by paying {0}, which enters with at least two +1/+1 counters on it due to Bloodspore Thrinax.
  2. Activate Yahenni by sacrificing Metalwork Colossus.
  3. When Metalwork Colossus dies, The Ooze triggers, creating a Mutagen token for each +1/+1 counter Metalwork Colossus had.
  4. Resolve the Yahenni ability.
  5. Activate Metalwork Colossus by sacrificing two Mutagens, returning it from your graveyard to your hand.
  6. Repeat.

What the combo produces