Could I make Hanzo's sonic arrow explode?

I’m trying to make a gamemode where everyone is a 1 hit kill and all characters have unique ability, and so I’m trying to give Hanzo an explosive sonic arrow… But i don’t know how I would do that.

You can’t track a projectile that’s an ability, and so, you can’t do that, unless you make a custom projectile that explodes after a certain time (or I’m pretty sure you can make it so that it explodes when hitting a wall), which is the only way to make something similiar. you can have custom projectile models by using extensions (click the little puzzle piece in the editor, above the rules).