Astral Starshot

Convoke.
Destroy target creature. If this card's cost was
paid by convoke, shuffle this card into your
library.
Astral Starshot is like hitting someone with a shooting
star, and looks very similarly. It can be shot from a
body part such as wolf's mouth, or a humanoid's hand,
or you can just cause it to fall from the sky at blinding
speed. Hitting someone with this pretty much causes
them to evaporate into starlight.