The good thing about Rain of Death is that you do not need to be near the target to shoot it.

BUT if a bard does decide to run in and whisper sweet melodies in the enemy's ear, they can use Repelling Shot to bounce out again.

Repelling Shot is also independent of the global cooldown timer, so you can use it like Bloodletter. (e.g. Heavy Shot/Straight Shot -> Bloodletter -> Repelling Shot within a 3 second window).