Vaaliizstrun, Dovahsebrom

Flying, Ward {x}, where X is the number of snow permanents you control.
Whenever a permanent you do not control is
dealt combat damage by any snow creature you control, put a frost counter on it (Snow
permanents are immune to frost counters.)
{x}{s}{t}: Destroy all permanents with 3 or
more frost counters on them with converted
mana cost X or less.