Gandalf the White is a mythic Legendary Creature — Avatar Wizard card from Tales of Middle-earth Promos (PLTR), collector number 19s. Current market price: — (foil $26.51), TCGplayer market prices via Scryfall.
Flash You may cast legendary spells and artifact spells as though they had flash. If a legendary permanent or an artifact entering or leaving the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.