Ipnuu, Heart of Winter

When Ipnuu enters the Battlefield, remove all
Thaw counters from Lands you control, and
place that many Hibernation counters on Ipnuu.
{w}{t}: Add an amount of {s} to your mana pool
equal to the number of Hibernation counters
on Ipnuu.
{s}{s}{s}{s}{t}: Search you library for a Bear, then
shuffle and place that card on top.