Bird Dog, Winged Guardian

Flying
When Bird Dog enters the battlefield or attacks, you may pay {1}. If you do, tap up to one target creature an opponent controls.
Bark of Courage — {1}{w}: Until end of turn, target creature gains indestructible.
If Bird Dog would go to the graveyard, return her
to your hand instead.
—
Her howl shakes the sky, a pledge to protect
her own.