Color Identity: B

Initial Card State
- Nightmare Void in hand.
- Chains of Mephistopheles and Bone Miser on the battlefield.
Easy Prerequisites
- You have a way to draw a card.
Steps
- Attempt to draw a card. The draw will be replaced by Chains of Mephistopheles, causing you to instead discard Nightmare Void. Then, you will mill two cards and return Nightmare Void from your graveyard to your hand due to Nightmare Void's dredge ability.
- Bone Miser's third ability triggers, attempting to have you draw a card. The draw will be replaced by Chains of Mephistopheles, causing you to instead discard Nightmare Void. Then, you will mill two cards and return Nightmare Void from your graveyard to your hand due to Nightmare Void's dredge ability.
- Repeat step 2.
Results
- Infinite self-mill.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).