Bheur Hag

Whenever a snow-covered land enters the battle
field place a frozen heart counter on this card.
{2}{s}, Spend 3 frozen heart counters and send a
target creature to the graveyard.

Bheur hags are attracted to selfish actions justified by
deadly cold, such as murdering a traveler for a winter
coat, chopping down a dryad's grove for firewood, and
so on.