Frost Harka

{3},{t}: Target nonsnow permanent becomes a
snow permanent in addition to its other types. If
you control 5 or more snow permanents, untap
Frost Harka.
{s}{s}{s},{t}: Choose one:
•Target creature has snow landwalk until end of
turn.
•Creatures you control get +1/+1 for each snow permanent you control until end of turn.