How to duplicate this level up animation?

See the attached YouTube video for reference. This animation/effect is from World of Warcraft and it is played when a character levels up. Basically I’m trying to duplicate that effect to some degree. I have had some mixed success using a part with multiple beams and a particle emitter.

Below are two videos of what I have so far.

I’m not sure how to get that fading, swirling effect in the center of it that goes up.

Thoughts? Suggestions?