Otherworldly Escort + Amoeboid Changeling + Thornbite Staff + Umbral Collar Zealot

Prerequisites

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Steps

1. 1Activate Amoeboid Changeling's second ability by tapping it, causing Otherworldly Escort to lose all creature types until end of turn.
2. 2Activate Umbral Collar Zealot by sacrificing Otherworldly Escort.
3. 3When Otherworldly Escort dies, it and Amoeboid Changeling trigger.
4. 4Resolve the Amoeboid Changeling trigger, untapping it.
5. 5Resolve the Otherworldly Escort trigger, returning itself from your graveyard to the battlefield as a Spirit Detective.
6. 6Resolve the Umbral Collar Zealot ability.
7. 7Repeat.

Effects

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