Glacius, Winter's Herald

Vigilance
Whenever Glacius, Winter's Herald
or another snow permanent enters the
battlefield you may pay {s}. If you do
put a +1/+1 on Glacius, Winter's Herald
and draw a card.
{x}{x}, {t}: Tap X target nonland permanents.
Those nonland permanents don't untap
during their controllers next untap step.