Which jobs REQUIRE a SB from Zakum?

I already know Nightlords need TT10 (which I have). What about mages and shadowers?

 

On top of my head, Bishop's Angel Ray requires a skillbook from Zak to unlock.
You may want to take a look at this for other sb: Zancks’ 4th Job Skill/Mastery Book Guide | MapleRoyals

 

thx!

 

Paladin, Hero, Bishop, and Night Lord

 

thank you!

 

Angel Ray is not required for bishops to get, especially if you're only using it to leech. It's 10% higher single target DPS than Genesis under ideal conditions, so a relatively minor gain that's highly situational. I mainly use it in rose garden boss and Von Leon

 

thank you for the answer!