Hardened Academic + Lesser Masticore + Phyrexian Altar

RW identity

Commander legal

The 3 combo pieces

• Hardened Academic
• Lesser Masticore
• Phyrexian Altar

How to execute it

1. Activate Phyrexian Altar by sacrificing Lesser Masticore.
2. When Lesser Masticore 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 Lesser Masticore.
4. Repeat.

What the combo produces

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