Altar of the Frozen Souls

Exile a snow card from your hand: Add one mana
of any color for each snow card you own in exile. Activate this ability only once each turn.
{t}, Exile Altar of the Frozen Souls: Shuffle any
number of target snow cards you own in exile
with total converted mana cost equal or less to
the amount of snow mana in your mana pool in
your library. (Snow mana is produced by snow spells
and snow permanents.)