Comprehensive Paladin Guide- Haplopelma-

Threaten works the same way here as it does in Artale iirc and all Paladins in Artale spam threaten in every boss. However, their bossing is usually in a full stack of party where it's more beneficial the more lines of damage that are dealt.

Personally, I don't use Threaten on Royals cause I'm too lazy but on Artale I use it