Activate Ashnod's Altar by sacrificing Priest of Gix, adding {C}{C}.
Activate Scampire by paying {3}{B}, returning Priest of Gix from your graveyard to the battlefield.
When Priest of Gix enters the battlefield, it triggers, adding {B}{B}{B}.
Repeat.

Infinite black mana

Infinite colorless mana

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Scampire

Priest of Gix

Ashnod's Altar

Activate Phyrexian Altar by sacrificing Priest of Gix, adding {B}.
Activate Scampire by paying {3}{B}, returning Priest of Gix from your graveyard to the battlefield.
When Priest of Gix enters the battlefield, it triggers, adding {B}{B}{B}.
Repeat.

Phyrexian Altar

Activate Scampire by paying {3}{B}, returning Peregrine Drake from your graveyard to the battlefield.
Peregrine Drake triggers, untapping up to five lands.
Tap those lands to add {4}{B}.
Sacrifice Peregrine Drake to Altar of Dementia, milling target player two cards.
Repeat.

Infinite mana lands you control can produce

Infinite mill

Infinite self-mill

Peregrine Drake

Altar of Dementia

Activate Phyrexian Altar by sacrificing Priest of Urabrask, adding {B}.
Activate Scampire by paying {3}{B}, returning Priest of Urabrask from your graveyard to the battlefield.
When Priest of Urabrask enters the battlefield, it triggers, adding {R}{R}{R}.
Repeat.

Priest of Urabrask

Activate Scampire by paying {3}{B}, returning Patron of the Orochi from your graveyard to the battlefield and giving it haste.
Activate Patron of the Orochi by tapping it, untapping all Forests and green creatures.
Tap those permanents to add at least {4}{B}.
Sacrifice Patron of the Orochi to Altar of Dementia, milling target player seven cards.
Repeat.

Combos with "Scampire"