Gravelgill Axeshark + Melira, Sylvok Outcast + Phyrexian Altar

BGU identity

Commander legal

The 3 combo pieces

• Gravelgill Axeshark
• Melira, Sylvok Outcast
• Phyrexian Altar

How to execute it

1. Activate Phyrexian Altar by sacrificing Gravelgill Axeshark.
2. When Gravelgill Axeshark dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Melira.
3. Repeat.

What the combo produces

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