Enduring Renewal, Deathrender, and Sarcatog

Prerequisites

• Enduring Renewal on the battlefield
• Deathrender on the battlefield
• Sarcatog on the battlefield

Steps

1. Activate Sarcatog's second ability by sacrificing the creature with Deathrender attached
2. When the creature dies, Enduring Renewal and Deathrender trigger
3. Resolve the Enduring Renewal trigger, returning the creature from your graveyard to your hand
4. Resolve the Deathrender trigger, putting the creature from your hand onto the battlefield, and attaching Deathrender to it
5. Resolve the Sarcatog ability, giving it +1/+1 until end of turn
6. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinitely large Sarcatog until end of turn