figured it out, for some absolutely retarded reason, the electric enemy is the ONLY ONE in the fight that only takes damage from its own element type. no indication that would be the case as fire ice electric and nova damage all deal damage to the other bosses just fine regardless of elemental typing.

My only issue with the Wizard quest for the Nova staff, is Nunu doesn't tell you to bring all four elements into the battle. She words it as a suggestion; keyword 'or.'

where do i find Nunu oder Nuru or however its called?

i found out how to kill them!!! the for fire one you need a fire staff
for the ice a ice staff and for the eletric a eletric staff