Yule Tidalwave

Scry X, then Cascade.
When a player casts a spell from their hand this
turn, they gain cascade. (When you cast this spell,
exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without
paying its mana cost. Put the exiled cards on the
bottom of your library in a random order.)
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"This is going be the biggest Xmas EVER!!"