Etrolyes,of Blood

Whenever you lose life deal half of that damage to target creature or player rounded up
Whenever a creature you control dies you may
pay 1 life: if you do put a +1+1 counter on target
creature you control
{p/b}{p/r} Pay 2 life:{t}Target creature you control
fights target creature you don't control if a
creature dies this way you may draw a card