Benthic Biomancer + Necroplasm + Thran Vigil

UB identity

Commander legal

The 3 combo pieces

• Benthic Biomancer
• Necroplasm
• Thran Vigil

How to execute it

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

What the combo produces

• Infinite self-mill