Maybe the transform condition could be based on the next time you cycle a card or something else? It is simple but a creature entering the battlefield under your control isn't much of a condition really and seems a bit plain.

I don't think we need to push cycling that much more at common. This is just meant to be a plain 'vanilla' card so I wanted to keep the transform condition that way.

Part of me wishes that a DFC slot be reserved for something not so Vanilla. But at the same time, it has been said that red lacks some vanilla cards, and this is one way to do it. I do wonder if the transform condition could be something that coheres with themes on other cards better though. Like instant/sorcery theme, or something.

I like "Whenever a red instant or sorcery spell you controls deals damage to a player, ..." which is typical for red and kinda reminiscent of Delver of Secrets which this already resembles.

On a flavor note - does anyone else feel that the transformed side should be an Elemental? Like the Ashna worshippers turn into actual flamekin when they ascend to a higher level in their hierarchy.

I think that's a great suggestion. Keeping the same creature type on the 2nd side generally is not flavorful.

This is a great thematic card that does well representing the creative aspects of becoming part of the manifestations of imagination that Elementals are in the world. I'd like to have more "mundane being/thing becomes something greater more impressive" flavor.