Benthic Biomancer + Grave-Shell Scarab + Thran Vigil

BGU identity

Commander legal

The 3 combo pieces

• Benthic Biomancer
• Grave-Shell Scarab
• Thran Vigil

How to execute it

1. Put a +1/+1 counter on Benthic Biomancer.
2. Benthic 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. Thran Vigil triggers, putting a +1/+1 counter on Benthic Biomancer.
4. Repeat from step 2.

What the combo produces

• Infinite self-mill