Maraya, Mistress of Knives

Lifelink
Whenever a creature an opponent controls dies, Maraya, Mistress of Knives deals 2 damage to any target.
{3}{b}Sacrifice a creature you control with power
3 or less, Maraya, Mistress of Knives gets +1/+1
and gains deathtouch until end of turn.
If you have 10 or more creatures in your graveyard,
Maraya, Mistress of Knives has First strike.