Enduring Renewal, Shield Sphere, Intruder Alarm, and Gríma Wormtongue

Prerequisites

• Enduring Renewal on the battlefield
• Shield Sphere on the battlefield
• Intruder Alarm on the battlefield
• Gríma Wormtongue on the battlefield

Steps

1. Activate Grima Wormtongue by tapping it and sacrificing Shield Sphere
2. When Shield Sphere dies, Enduring Renewal triggers, returning Shield Sphere from your graveyard to your hand
3. Resolve the Grima Wormtongue ability, causing target player to lose 1 life
4. Cast Shield Sphere by paying
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite lifeloss
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count