Ach-Scrull the Abominable

{4}{s},{t}, Sacrifice a card from your hand:
Ach-Scrull the Abominable deals damage
equal to the casting cost of the sacrificed
card to any target. If the sacrificed card was
a snow permanent, Ach-Scrull deals double
that damage instead.
Ach-Scrull the Abominable gets +x/+x,
where X is the number of snow permanents
that you control.