Isis and Mana in “Unfinished Business”

Mana, Mahad's spirit is very much alive; existing deep inside that stone. In fat, he's even stronger now. My Millennium Necklace has shown me all. He fused himself together with his most trusted creature.

What? I'm confused.

Mahad has been transformed. He will now be known as the Dark Magician.

Dark Magician? But my training is incomplete! And I need Master Mahad! I want to become an elite spell-caster! I can't do it alone!