Moritte of the Frost is a uncommon Legendary Snow Creature — Shapeshifter card from Magic Online Promos (PRM), collector number 88392.
Changeling (This card is every creature type.) You may have Moritte enter as a copy of a permanent you control, except it's legendary and snow in addition to its other types and, if it's a creature, it enters with two additional +1/+1 counters on it and has changeling.