The recent update to patch 2.4 PTR added quotes for Kael’thas in the Magister’s Terrace dungeon. Previously, it had PH quotes (Place Holders). This is what Kael says during combat:
“Don’t look so smug! I know what you are thinking, but Tempest Keep was merely a set back. Did you honestly believe I would trust the future to some blind, half-night elf mongrel?
“Oh no, he was merely an instrument, a stepping stone to a much larger plan! It has all led to this … and this time you will not interfere!”
“I’ll turn your world … upside … down.”
“Master, grant me strength.”
“Do not get … too comfortable.”
“My demise accomplishes nothing! The master will have you! You will drown in your own blood! This world shall burn! Aaagh!”