Color Identity: B

Initial Card State
- Chthonian Nightmare in hand.
- Priest of Gix on the battlefield.
- Activated Sleeper in your graveyard.
Mana Needed
- ({1} magic symbol)
({B} magic symbol)
available.
Steps
- Cast Chthonian Nightmare by paying ({1} magic symbol)
({B} magic symbol)
. - When Chthonian Nightmare enters the battlefield, it triggers, causing you to get ({E} magic symbol)
({E} magic symbol)
({E} magic symbol)
. - Activate Chthonian Nightmare by paying ({E} magic symbol)
({E} magic symbol)
({E} magic symbol)
, sacrificing Priest of Gix and returning Chthonian Nightmare from the battlefield to your hand, returning Activated Sleeper from your graveyard to the battlefield as a copy of Priest of Gix. - When Activated Sleeper enters the battlefield, it triggers, adding ({B} magic symbol)
({B} magic symbol)
({B} magic symbol)
. - Cast Chthonian Nightmare by paying ({1} magic symbol)
({B} magic symbol)
. - When Chthonian Nightmare enters the battlefield, it triggers, causing you to get ({E} magic symbol)
({E} magic symbol)
({E} magic symbol)
. - Activate Chthonian Nightmare by paying ({E} magic symbol)
({E} magic symbol)
({E} magic symbol)
, sacrificing Activated Sleeper and returning Chthonian Nightmare from the battlefield to your hand, returning Priest of Gix from your graveyard to the battlefield. - When Priest of Gix enters the battlefield, it triggers, adding ({B} magic symbol)
({B} magic symbol)
({B} magic symbol)
. - Repeat.
Results
- Infinite LTB.
- Infinite ETB.
- Infinite sacrifice triggers.
- Infinite death triggers.
- Infinite storm count.
- Infinite black mana.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).