When Bishop of the Bloodstained enters the battlefield, target opponent loses 1 life for each Vampire you control.

Whenever a creature enters the battlefield under an opponent's control, you may have that player lose 1 life.

Flash Bloodcrazed Paladin enters the battlefield with a +1/+1 counter on it for each creature that died this turn.

Bloodghast can't block. Bloodghast has haste as long as an opponent has 10 or less life. Landfall — Whenever a land enters the battlefield under your control, you may return Bloodghast from your graveyard to the battlefield.

Multikicker {B} (You may pay an additional {B} any number of times as you cast this spell.) When Bloodhusk Ritualist enters the battlefield, target opponent discards a card for each time it was kicked.

Lifelink When Bloodline Necromancer enters the battlefield, you may return target Vampire or Wizard creature card from your graveyard to the battlefield.