Mountain Terror

Summit {r}{r} ({r}{r}: Turn this creature face down,
it is a Mountain with "{t}: Add {r} to your mana
pool." And "{r}{r}: Turn this card face up.")
When Mountain Terror is turned face up, it gains haste.
"As we trekked to the summit we felt the strange sensation of flight. We were confused as we were still standing on hard ground."
-Horennm, Mountain Guide