Vlad still doesn't make sense
Abilities cost health. Ok makes sense blood magic. But, abilities restore health. Makes sense lore wise but not gameplay wise.
90% of mana abilities don't restore mana. You know why? because other wise there's no point for an ability to restore a cost because then why have a cost in the first place. Like to me it just seems stupid.
Also on costs Olaf needs higher mana costs :)