Thran Vigil + Benthic Biomancer + Grave-Shell Scarab

Prerequisites

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Steps

1. 1Put a +1/+1 counter on Benthic Biomancer.
2. 2Benthic Biomancer triggers, causing you to mill a card and return Grave-Shell Scarab from your graveyard to your hand, and then causing you to discard Grave-Shell Scarab.
3. 3Thran Vigil triggers, putting a +1/+1 counter on Benthic Biomancer.
4. 4Repeat from step 2.

Effects

• Infinite self-mill