Caradhras the Cruel
The Redhorn Gate Nightmare #8 (x2)

When Revealed: Return all Snow cards in the encounter discard pile to the top of the encounter deck, in random order. Reveal the top card of the encounter deck (reveal the top 2 cards instead if there are 3 or 4 players in the game).

"Caradhras has not forgiven us," he said. "He has more snow yet to fling at us, if we go on."
–Gimli, The Fellowship of the Ring