Soza, The Wintermourn

This spell cant be countered
Flash, first strike, deathtouch, Ward-pay 8 life
Wintermourn- Whenever this creature, or another
wraith, specter, shade, knight, or snow creature
you control deals damage to a player, that player
gets 2 frostbite counters and you draw a card.
Remove those counters at the start of your next
turn. (During each player's untap step, that player
chooses a permanent for each frostbite counter they
have. Those permanents don't untap.)