Semester's End, Study Break, Cram Session, Double Major, Expel, Flunk, Multiple Choice, Pop Quiz, and so on
Outside of the unplayable MTG holiday cards that Wizards of the Coast prints for local game stores as a Christmas gift, it can be quite hard for the average player to find MTG Christmas cards to use in their festive-themed deck
Gandalf himself is not even big enough to be a strong threat on the board
There's clear drawbacks to Bazaar -- it doesn't tap for mana and its ability is a net loss in cards -- but these things are irrelevant if your only goal is to fill your graveyard as quickly as possible
When a creature thats blinked is removed from the game it returns either on the abilitys resolution or at the beginning of the next end step