Phyrexian Altar + Port Razer + Yore-Tiller Nephilim

WUBR identity

Commander legal

The 3 combo pieces

• Phyrexian Altar
• Port Razer
• Yore-Tiller Nephilim

What must be in place

Yore-Tiller Nephilim does not have summoning sickness.
An opponent is unable to block creatures you control.

How to execute it

1. Declare Yore-Tiller Nephilim as an attacker.
2. Yore-Tiller Nephilim triggers, returning Port Razer from your graveyard onto the battlefield tapped and attacking.
3. Deal combat damage with Port Razer and Yore-Tiller Nephilim.
4. Port Razer triggers, untapping each creature you control and causing you to get an additional combat phase after this one.
5. Activate Phyrexian Altar by sacrificing Port Razer, adding one mana of any color.
6. 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 untap of creatures you control