I think the concept is cool! It’s showing off some more aggression in the effect than your actual effect does though, which is really cool! I think your effect would benefit a lot from looking more like it.
Right now your elements are working a little against each other. Like you have this symbol that comes into play and covers the swirling particles (at 4 seconds in), but it doesn’t react to the swirl exploding and turning into a projectile (around 16-17 seconds in). The same goes for the big symbol that slowly grows in. It doesn’t react to, or support the projectile at all. Both of these elements should be supporting the build up of the projectile one way or another.
You could for example have the first symbol that covers the swirl shrink over a very short period of time just before the projectile shoots off and the swirl explodes into particles. This could be the que for the other symbol to quickly grow out and slowly fade out. But please do experiment on how they can support the projectile.
The particles that shoot out when the projectile is shaped (at 16-17 seconds in) and shoots off really need to have more speed in the beginning and then slow down. Use the “Limit Velocity over Lifetime” module in shuriken to make this happen. (They should be moving like 5x faster in the beginning but slow down quite fast)
The same goes for the impact, those particles are moving too linear as well. Start fast and then slow down, just like you animate the big mesh pillar that comes in. I like how the pillar looks a bit like a tornado in your concept, having particles swirling up. Try experimenting with the “Velocity over Lifetime” module. There’s a settings in there for orbital movement that could make this happen.
When the beam mesh hits the ground (at 17-18 seconds in), your smoke particles are too transparent and come in to play too late. I think it’s because it’s spawning from within the beam. You can have them spawn further out by increasing the radius of the “Shape” module and changing the Radius Thickness to a value close to 0. This will make the smoke spawn closer to the edge of the radius. You can use a Hemisphere as a Shape for the particles shooting out when the beam impacts the ground too.
Overall I think the concept and the idea is really nice. If you get the effect looking like your concept then I think you’re well on your way of making a really cool dark magic effect! Keep at it and don’t forget to post your work in progress if you’re interested in getting more feedback.