Unstoppable Slasher, Solemnity, and Phyrexian Altar

Prerequisites

• Unstoppable Slasher on the battlefield
• Solemnity on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Unstoppable Slasher, adding one mana of any color
2. When Unstoppable Slasher dies, its second ability triggers, returning it from your graveyard to the battlefield with zero stun counters due to Solemnity
3. Repeat

Results

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