Winter's Wrath

(You may cast a legendary sorcery only if you control
a legendary creature or planeswalker, and a snow
sorcery only if you control a snow permanent.)
Whenever a nonsnow permanent becomes
tapped, that permanent doesn't untap during
its controller's next untap step.
Exile Winter's Wrath with 3 tempest counters
on it. At the beginning of your upkeep, remove
a tempest counter from it. Its effects last until
the last tempest counter is removed from it.