Hardened Academic + Putrid Goblin + Yahenni, Undying Partisan

RWB identity

Commander legal

The 3 combo pieces

How to execute it

  1. Activate Yahenni by sacrificing Putrid Goblin.
  2. When Putrid Goblin dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. Hardened Academic triggers, putting a +1/+1 counter on Putrid Goblin.
  4. Resolve the Yahenni ability.
  5. Repeat.

What the combo produces