Deathbloom Strix

Flying, deathtouch
When you cast Deathbloom Strix you may pay
up to five life. If you do, creature get -X/-X until
end of turn where X is equal to the amount of
life payed.
When Deathbloom Strix enters the battlefield
draw a card. At the beginning of the next end
step you gain life equal to the number of
creatures that died this turn.