Winter's Here

Transforms from Winter's Coming
When Winter's Coming transforms, return all
cards exiled with shelter counters on them onto
the battlefield under their owner's control.
All permanents without shelter counters on them
are snow in addition to their other types and have
"{s}{s}{s}{s}{s}{s}{s}, {ut}: Put a shelter counter on
this card" and "As long as this card isn't a basic
land, tap it.".