Making the CGI team work for their money

Pondering his orb.

He's probably manifesting Picard through his own and Sarek's shared Katra. Like a Katra ghost... Because that's the sort of dumb shit the SNW writers will make up on the spot for no good reason.

Clearly a hadouken.

I believe he's channeling his ki to charge a kamehameha.

He uses magnetic fields to trap his blue angels. He was hilarious at parties when younger.

He's using the magic he knows. He's believing.

Honestly, I wouldn't be mad if we got a The Magicks of Megas-tu prequel even if it breaks a bunch of canon and they use a convenient memory wipe to solve all the problems, mostly because it would involve TAS getting any canon recognition whatsoever.

Maybe it's one of the Calamarain, like the one Q summoned onto his palm in Deja Q