Shalltear Bloodfallen

Deathtouch, Lifelink, Fist stirke, Split second
Flash, Flying, Haste, Protection from spells
Whenever creature dies put +1/+1 counter on Shalltear, you gain 3 life and draw a card.
{p/b}: Remove +1/+1 counter: You gain 7 life.
Pay 5 life: Destroy target permanent.
Pay 10 life: Target player lose 10 life.
Pay 20 life: Destroy all other creatures.