>>20732843What? It's based off the dotaku, the japanese ceremonial bell used to herald rain through ritual, which its dex entries point to.
I don't know where you got cursed anything. It's a weather/harvest bell, which it fits as it is. Not giving it Heal Bell is questionable, given how other Heal Bell mons get it, but it isn't directly tied to theme.
Pic related, a dotaku.