I’ve a few nitpicks on this so here they are.
Yes on your color statement. I assume all of these are going to be part of the same power set, so adding the colors to unify the set is essential.
The timing of the Hot elements make sense and are good but seem a little slow. Is there a gameplay reason for the charge to be as slow as it is? If so then cool. If not, I’d say speed it up a bit. When the feathers touch the ground there could be a burst there that releases the HoT in a more dramatic way. It doesn’t need to look like a violent explosion but some release of power would be great.
The feathers that come up from the ground are good, but if you were to add a burst you might want a primary burst to release with a high drag with the elements you have there as secondary.
I’d think about turning the ring into something less uniform, and making it visually more in line with what the HoT elements are. You might want to think of a way to remove the ring in a less uniform way, if you go with a ring that looks less like a ring and more like an area of effect for a healing spell. Could be a sigil, druidic, angellic, or something less like a perfect ring. Same goes with your target for the spell.
Finally the HoT duration seems to be less time than the charge up. Can you add a mesh ring to the ring with an energy upward that would act as a visual timer for the duration of the HoT. Would be active when the ring is at its largest. Would indicate the amount of time left on the HoT without using a HUD element.
The timing is good, but again some kind of upward burst per reload in the middle of each charge with whatever color treatment you might want. If this is also meant to show enemies that you’re fully loaded, then some kind of indicator might help.
The perfect ring works well here, since it seems more like a HUD element instead of an in world spell.
Your transition out is underwhelming after the last reload is set. You might want to think of something that indicates a fully reloaded character. Now it ends as an afterthought.
Let me know if you have any questions.