Hardened Academic + Phyrexian Altar + Safehold Elite

RGW identity

Commander legal

The 3 combo pieces

• Hardened Academic
• Phyrexian Altar
• Safehold Elite

How to execute it

1. Activate Phyrexian Altar by sacrificing Safehold Elite.
2. When Safehold Elite 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 Safehold Elite.
4. Repeat.

What the combo produces

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