Flying
Rimefeather Owl's power and toughness are each equal to the number of snow permanents on the battlefield.
: Put an ice counter on target permanent.
Permanents with ice counters on them are snow.
Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Choose a counter on target permanent or suspended card. Remove that counter from that permanent or card or put another of those counters on it.
: Put an ice counter on target permanent.
Permanents with ice counters on them are snow.
(You may pay an additional 