Creature
Dragon
: This creature gains flying. (This effect lasts indefinitely.)
: This creature loses flying. (This effect lasts indefinitely.)
: This creature phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before you untap during your next untap step.)
4 / 4
"Across the plains, farmers who braved the mists began to vanish. Most blamed the goblins; none guessed the truth."
—Hakim, Loreweaver