bloodlust necromancer

when bloodlust necromancer enters the battlefield
draw a card, if the card is not a swamp mana or a demon, discard it.
{t}revive a card of your choosing.
{b}{b}target player loses 5 life and you gain 5 life.
tap{x}swamp mana and target player loses{x}life
({x}is equivalent to the amount
of swamp mana you tap)
blood can both heal and and harm oneself-nashgarv, warlord of hell