Ball at the end? (Spoiler Warning)
When they start the wizard challenge and the dad pushes the full wizard power ball on the center podium, where did the magic come from? He's still a full wizard(at the time) and it wasn't his power and it wasn't Justin's or Alex's because they could still do magic? So any guesses or answers?
Half-Blood Son of Poseidon, Son of Adam and Gryffindor 7th year