Harrowing Deathwatcher

as long as Harrowing Deathwatcher is in the
battlefield, every turn draw 1 additional card
if 1 card's mana cost is bellow 3 discard a
a card from graveyard into the exile target
opponent looses X life, X is the converted
mana cost of exiled card. if its above 3
gain X life, and put +X/+X counter on target
3 creatures you control
Anonymous menaces roam the vast graves