Its always Beast!

[anthony_lynch15]

His future self killed Illyana

Uncanny X-Men (2013) Annual #1. From 2099 where he appears and destroys the Sanctorum where Illyana, Sorcerer Supreme, gets murderstomped. Her dying words to Tempus, who's accidentally ended up there via time travel, is to bring Hank to trial back in the 616 in order to stop him from turning into...that. Who knows when the trial will happen since Tempus is pissing around doing god know's what.

Wait....I didn't realise that was supposed to be Beast.
Also if that future Beast is throwing around magical powers.....could the Beast that Illyana refers to be the young Beast.

[Midnight_v]

"Wait...are you Hank Williams McCoy?" -Black Swan
"Yes... how did you..." -Hank
"The Great Beast is know in many realities" - Black Swan.

Its... like... I never disliked him but the more I think about it. The Dark Beast. That thing pictured above. The horned guy from the team with raze. The Illuminati team. . .

Beast is a perfect Big Bad for the X-men... I think they did it once or twice already but honestly.

He can basically replace apocalypse. He has a mutable form and can power himself up via tech and baby beast is getting into magic... If your a fan of the character as a hero.
He's really been painted into a corner.