This spell, a 54 Necro nuke hits for 675 damage, takes 4 seconds to cast and costs 340 mana. For comparison, my level 49 nuke, Torbas' Poison Blast hits for 668 damage, takes 4 seconds to cast, and costs 230 mana. Clearly these spells are not in line with eachother, if this is intended, I'd love to have it explained.