Beckoning the Hero

Exalted (Whenever a creature you control attacks
alone, it gets +1/+1 until end of turn.)
At the beginning of combat on your turn, create
a 1/1 White and Green Centaur creature token
with Exalted.
Sacrifice Beckoning the Hero: Until end of turn,
target creature gains hexproof and indestructible
and cannot be sacrificed or exiled.