mtg holiday promo cards Snow Mercy | Promotional haste When this creature enters Cheer (foil)

With Elrond on the field I'll be paying 4 mana and getting an additional 7 power on the battlefield if I have at least 3 creatures to get +1/+1 counters

This white creature could do something in a Hylda of the Icy Crown Commander deck or serve as a disruptive piece for a spirit deck that needs to stop a blocker, but its too narrow for general play

If a card that isn't a transforming double-faced card is a copy of Ojer Kaslem, Deepest Growth, it won't return to the battlefield when it dies

This is most prevalent in Pauper, where powerful affinity decks leverage artifact lands and other cheap artifacts to keep this active