Mikaeus, the Unhallowed, Otherworldly Escort, and Woe Strider

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Otherworldly Escort on the battlefield
• Woe Strider on the battlefield

Steps

1. Activate Woe Strider by sacrificing Otherworldly Escort
2. When Otherworldly Escort dies, it triggers, returning itself from your graveyard to the battlefield as a Spirit Detective
3. Resolve the Woe Strider ability
4. Activate Woe Strider by sacrificing Otherworldly Escort
5. When Otherworldly Escort dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it
6. Resolve the Woe Strider ability
7. Repeat

Results

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