M&M VII was my first RPG of my life(still have the game CD), now i an playing VIII : Day of Destroyer as necromancer. I click in "raise dead", then click in a corpose and the corpse don't reanimate. How this is suppose to work? How i use dark magic in viii?

Thanks. So, is possible to revive dragons with this skill? For example, if a dragon have 1300HP, i will need 26 points(insane amount even with + skill items)?

PS : Sorry for the double post(the post was processing, so i edited during processing and apparently, posted 2 times the same question)