How am i supposed to get dark nova?

lvl 100 myth wizard questing in ruined alcazar in khrysalis.

go do darkmoor. get lvl 100 spell.

go eclipse tower. get shadow fusion spell.

need dark nova.

can't get dark nova in eclipse tower, is not at khonda desert where get dark shadow spells. do not have access to arcanum yet. use house tours to get to arcanum.

why velma not there in classroom?!

no way as far as i can tell to get dark nova. Do i just have to wait until khonda desert? also wheres velma? why is she the only prof. not in the classroom?