There's only one bow, but there are many castles and other heroes.
And the ability isn't that bad – you often have to shoot at enemies at close range.
*Slightly off-topic: there's this weird trick (it happens rarely, is used rarely, and is generally a silly trick) – teleporting crossbowmen to enemy archers, but only if the enemy has moved all their melee troops forward.
As for the champions... they're basically only good for interrupting the casting of spells.
*Note that I said it's not about healing, but about the white ones being better. And I just like the white color more.

"Смерть - лучше опозоренной чести"