He's jarred back to his senses. There is simply not time for self-doubt.

Vincent gives his brother Kristoff a hand signal and turns his focus inwards. He lets his awareness fall upon his memories of his sister, and his awareness of that which lies at the core of himself. The unmistakable presence of that which is not mortal. The spark that speaks of his Asgardian blood. The Odinforce.

That particular combination of Amora and von Doom which only exists in one other being in this reality.

If all his calculations and spellwork test true, like will attract like.