Guild Wars 2

I can’t remember the name of the skill; Reaper’s Scythe, or something, but the tooltip says it bounces 5 times.

When you throw a ball at a target, it will bounce once, however it will also keep travelling due to the bounce. This means that, since the attack hits 5 targets, after the fifth target/fifth bounce, it would carry on travelling, meaning it would seem like it would hit another.

Just change it to Number of Targets: 5

Also, is there an order of priority with moves which bounce between?

Priority is based on distance, and it prioritizes players over summoned creatures. I don’t know the exact prioirities (since most have tiers within).

Bounce is the correct description. If you have 1 target it will bounce between you and the target 5 times resulting in 12 vuln and 2 applications of regen on yourself.