Archelos, Lagoon Mystic + Ashnod's Altar + Aurelia, the Warleader + Terra, Herald of Hope

WUBRG identity

Commander legal

The 4 combo pieces

• Archelos, Lagoon Mystic
• Ashnod's Altar
• Aurelia, the Warleader
• Terra, Herald of Hope

What must be in place

An opponent cannot block creatures you control.

How to execute it

1. At the beginning of your combat phase, Terra's first ability triggers, causing you to mill two cards.
2. Declare Terra and Aurelia as attackers.
3. Aurelia triggers, causing you to untap all other creatures you control and to get an additional combat phase after this one.
4. Deal combat damage to an opponent using Terra, triggering its second ability.
5. Holding priority, activate Ashnod's Altar by sacrificing Aurelia, adding {C}{C}.
6. Resolve the Terra ability, choosing to pay {2} to trigger its reflexive ability, returning Aurelia from your graveyard to the battlefield untapped due to Archelos.
7. Repeat each combat phase.

What the combo produces

• Infinite combat damage
• Infinite combat phases
• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite mana creatures you control can produce
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite untap of creatures you control