Warglave
Veteran
Best bet is to see what loot is available from each and change loot spec for each kill. If I recall, azuregos is the only one that drops a 2h weapon that you could even use. Don't recall any shields, so for everything but him fury, I guess.
https://www.wowhead.com/guide-to-world-of-warcrafts-13th-anniversary-events#worldbosses-lord-kazzak
^ loot from last year. Better ilevel this year for 119.
https://www.wowhead.com/guide-to-world-of-warcrafts-13th-anniversary-events#worldbosses-lord-kazzak
^ loot from last year. Better ilevel this year for 119.