Almost Infinite Vampire DrainBontu's Monument on the field. Combo pieces are
Oathsworn Vampire +
Pitiless Plunderer + (Sack outlet -
Yahenni, Undying Partisan is probably best, but
Defiant Salvager works too).
- Cast
Oathsworn Vampire with PP,
Bontu's Monument, and your sack outlet already on the field.
- OV causes BMon to trigger, and you gain a life.
- Sack OV to Yahenni or Salvager, which triggers
Pitiless Plunderer to create a treasure token.
- Sacrifice the treasure token for a black mana, and then use that black mana to cast
Oathsworn Vampire from your graveyard (because of the reduced mana cost that BMon creates).
- This triggers BMon which drains your opponent for one life.
- Repeat as many times as necessary to drain all their life.
And voila! Nearly infinite vampire drain.
The rest of the deck is to help get you to the combo pieces.