Mikaeus, the Unhallowed, Blue, Loyal Raptor, and Thermopod

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Blue, Loyal Raptor on the battlefield
• Thermopod on the battlefield

Steps

1. Activate Thermopod 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. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite red mana