sorry but this is really bad... i've made this spell also and know where the difficulties and your spell works multiple times on a corpse (unlimited) the corpses can be used by necros... your spell gets messed up if another hero in the map uses brilliance aura (if the hero is dead the aura will work on), the hero has a brilliance buff (with the description and the icon of the brilliance aura)... the tooltips are crap but that has already been mentioned... your aura can only be used by 1 hero (no multiple usage in 1 map). Your hero does not have an aura model and the many random generated numbers used for the spell don't make sense...
sorry but i wont rate this until you release a new version you cannot call this a spell