Gandalf the White
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白袍甘道夫 (Gandalf the White) (zhs)

Legendary Creature - Avatar Wizard | Power/Toughness: 4 / 5 (CMC 5)
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.