Mikaeus, the Unhallowed, Blue, Loyal Raptor, and Umbral Collar Zealot

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Blue, Loyal Raptor on the battlefield
• Umbral Collar Zealot on the battlefield

Steps

1. Activate Umbral Collar Zealot by sacrificing the other Dinosaur
2. When the Dinosaur dies, its undying ability triggers, returning it from your graveyard to the battlefield without a +1/+1 counter on it due to the -1/-1 counter it will gain from Blue
3. Resolve the Umbral Collar Zealot ability
4. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite surveil 1