As Zeno/Flare would say but no one would believe.
If Zeno/Flare could halt their transformation right at the middle, this would be the resulting form (without being obscured by a mass of black energy for all of a second or two). Canonically speaking,they're too young and inexperienced as partners to do so, though. As such, this would be showing it as it would be when they're adults and synchronized enough to do so. This form's called the Vaizal Flux, and the previous three Vaizal did in fact achieve it, so Zeno/Flare is the odd one out so far.
The form is effectively not even a solid physical state, in a manner of speaking. It looks like it's waving and fluid like some kind of liquid or heat wave. All depends on the moment. There's sooome form of rough physical contact possible, but the 'body' otherwise just flows into and around whatever it wants. It's fundamentally speaking, all the energy that Vaizal hold without a proper shell (skin/muscle/bone/etc) to contain it, and for all of the ten minutes it can be held for, the sheer flexibility of the raw energy makes it better than simply having the technically "powerful" drakhan form, while having a far wider ranger of motion that said drakhan body wouldn't be able to exhibit otherwise.