Windborne Manta Ray

Flash (You may cast this spell any time you could
cast an instant.)
{1}{w}{u}: Windborne Manta Ray gains +1/+1,
flying, and hexproof until end of turn.
"I stepped upon the winged beast as it elevated into the cloudy sky. Then trekked towards the front on foot
and stuck my spear into the cranium to stabilize
myself upon its thick skin. "