Move Creation Workshop

[Professor Sunshine]

Omega Burst Flash is good.

Black Smoke:

No matter the version, the Black Smoke will always travel at 50MPH and will dissipate once it reaches it's maximum radius, and the attack will only last 8 seconds before all of the smoke dissipates.

Are you sure you don't mean how long he's breathing smoke? Since:
A) You haven't specified how long he breathes smoke for.
B) There's already a condition for when the smoke dissipates (after it's travelled the 15ft/50ft distance at 50 MPH, so about 0.2 seconds or 0.7 seconds after being breathed out depending on the version).

Also, since the smoke spreads out, it would realistically be stronger the closer the target is to Syn (so at the edge of the range it does limited damage).

Lastly, since the smoke is black, does it obstruct visibility? Or can people see through it well enough?

Black Smoke (600 OM, requires Ranged Proficiency, Area Attack)

Syn Shenron, in his Omega Shenron form, channels energy into the cracked Dragon Balls on his chest, before unleashing a dark smoke from them, reminiscent to the smoke from Black Smoke Shenron. The size of the smoke cloud can be varied depending on how long Omega Shenro charges the attack, with the lowest charge taking around 3 seconds and reaching a 15 foot cone in front of Omega Shenron, and the biggest version taking a long 15 seconds to fully charge, with reaching a 50 foot cone in front of Omega Shenron. As any opponents stay in the smoke's radius regardless of the version used, they will end up slowly taking damage as the negative energies from the smoke slowly corrodes the opponent's skin, with the smoke corroding and hurting the opponent faster the closer they are to Omega Shenron. No matter the version, the Black Smoke will always travel at 50MPH and will dissipate once it reaches it's maximum radius, and the attack will only last 8 seconds before the cracked Dragon Balls stop spewing smoke and all of the smoke dissipates.

Using this move uses a varying amount of stamina depending on the version, and while using the minimum version only drains a bit of stamina from Omega Shenron, using the fully charged version takes a huge chunk from Omega Shenron's stamina, and as such he can only use the Black Smoke 3 times a day. In addition, Black Smoke can only be used by Syn whenever he is in one of his Omega Shenron forms, so Syn cannot use this move in his main form. The Black Smoke also can be dispelled by heavy winds, and will be blown away if such a move is used. Lastly, While Omega Shenron can move while charging the technique, the Shadow Dragon has to stay still in order to fire the technique, as Omega Shenron needs focus to keep the smoke coming out.