"Will it bring an end to the world as we know it?" This is the most basic test to distinguish a good idea from a bad one.
Bad ideas have a way of wrecking solitude, and that's all she wants. When the Winter Witch can't get a moment's peace in the North Pole, she'll try anything: swearing at the top of her lungs to convince people to leave her alone, or casting a spell to become nearly invisible; or, if those don't do the trick, she'll forge an alliance with Santa (a retired warrior who's anything but jolly) and save the world from a riddle devised by the daftest pair of libertines ever to have lived.
Hopefully, the swearing works. She knows some good swear words she's been dying to try out.
Will the Vikings of Midgard take up arms against the rising darkness? Will the White Queen see through the treachery of an evil necromancer? Can reindeer be made to fly, and can everyone who isn't the Winter Witch please stop meddling with dark forces beyond mortal comprehension for a bit?
