Machrosa, the White Death

Lifelink, Trample, Vigilance
You lose life equal to the amount of {x} paid to
cast Machrosa, the White Death.
Machrosa, the White Death, power and
toughness is equal to the amount of life lost
to cast her.
{t}: Draw cards equal to the amount of life
gained this turn.
{p/w}{p/w}{p/w}{p/w}{p/w}:{ut}