Al Davidson

The griffin's shadow gives courage to the righteous and dread to the idle.

Unyaro Griffin

Flying
Sacrifice Unyaro Griffin: Counter target red spell that assigns damage to you or a creature you control. Play this ability as an interrupt.

Flying
Sacrifice this creature: Counter target red instant or sorcery spell.

"Across the plains, farmers who braved the mists began to vanish. Most blamed the goblins; none guessed the truth."
—Hakim, Loreweaver

Mist Dragon

o0: Flying
o0: Loses flying
o3o
Uoo
U Phases out

{0}: This creature gains flying. (This effect lasts indefinitely.)
{0}: This creature loses flying. (This effect lasts indefinitely.)
{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.)