yes! pet sellion is nice pet, in dungeon he can gain 2 bar MP(in one monster) and recover 30% HP.
but we all know that in mp recovery it does not effect dio, because dio have AP, also all other pet cannot give MP(AP) for dio.
But dont be hate with dio becuse of that, now why? because one of dio's skill tree is increase AP regen and you can increase its rate using drakar(2nd job), so why dio is being hated in PVP in NAGC.