Ashnod's Altar + Hardened Academic + Wingrattle Scarecrow

RW identity

Commander legal

The 3 combo pieces

• Ashnod's Altar
• Hardened Academic
• Wingrattle Scarecrow

How to execute it

1. Activate Ashnod's Altar by sacrificing Wingrattle Scarecrow.
2. When Wingrattle Scarecrow 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 Wingrattle Scarecrow.
4. Repeat.

What the combo produces

• Infinite colorless mana
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite sacrifice triggers