You manage to warn her, and while she was at first doubtful, the magical energies given off by you are nearly identical to hers, aside from some faint, strange, almost dead-like, corruption in it.
The two of you manage to take the Council by surprise, slaughtering all of those filthy traitors.
With time, future Shima's magic fades away with the original timeline, reverting you back to your true form, allowing you and Shima to embrace immortality, and form a new order, one of peace, and alliances with your human world.
All hail the immortal King and Queen of the Magicians.