Heartmender + Phyrexian Altar + Stalwart Successor

WBG identity

Commander legal

The 3 combo pieces

• Heartmender
• Phyrexian Altar
• Stalwart Successor

How to execute it

1. Activate Phyrexian Altar by sacrificing Heartmender
2. When Heartmender dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. When Heartmender enters, Stalwart Successor triggers, putting a +1/+1 counter on Heartmender
4. Repeat.

What the combo produces

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