Quote Originally Posted by artrax
once Kael'Thas is defeated Kelthuzad will be summoned and announce "Naxxramas was mearly a set back."

the hard mode is "Raids are mearly a setback."
After Kel'thuzad dies, Illidan arrives, screaming "NOW I AM PREPARED!!!!"

His quote when switchin thru phases will be "Feel the hatred of 10001 years" (A year has almost passed Since TBC)