Mist Dragon
Mist Dragon
{0}: This creature gains flying. (This effect lasts indefinitely.)\n{0}: This creature loses flying. (This effect lasts indefinitely.)\n{3}{U}{U}: 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.)
Big Mana Dragon Kindred Interaction Phasing