Timed right, that can be a massive game changer
Though its not a unique card, given that its the exact same Kristoff, Reindeer Keeper thats card number 13 in Shimmering Skies (at least in terms of its printed stats and abilities), theres a unique foil treatment to this card, which also lacks the black border around its Lore symbols
If any card has damage on it equal to or greater than its Willpower, that card is banished and moved to the Discard Pile
Yoshitaka Amano illustrated this Double-faced Kefka, Court Mage/Kefka, Ruler of Ruin and Terra, Magical Adept/Esper Terra
From the choice of artists to the characters represented
Pair it with a card, or multiple cards, that force your opponents cards back into their hand and youll seriously get ahead on lore points, getting yourself closer to victory