Bone Shrieker

Flying
When Bone Shrieker enters the battlefield,
sacrifice all creatures you control with mana
value 3 or less.
{b}, Exile a creature card with mana value 3 or
less from your graveyard: Put a +1/+1 counter on
Bone Shrieker and each player loses 2 life.
Unearth {1}{b}{b}