[quote=@Rilla]
depends on how many forms he can take per match, how fast he can switch between them, but at base, at least high powered, more or less depending on how strong said forms are.

in general, some may consider it godmode, to be able to switch to just the right element, at just the right time(or before) to gain an edge over the opponent.
[/quote]

That's why T1 uses a turn called 'preps' to dictate the activation of special abilities. In order to avoid people instantly launching some kind of AOE attack when their caught off guard to effecting a large area at a drop of a hat. 

[i]A 'prep' is a turn in which the character prepares to launch their attack. Some special abilities require a certain amount of prep's before an attack can be successfully launched. As a player, it is your responsibility to be aware of which abilities require preps and then to adhere to these rules.

A prepping move should state clearly what ability is being prepared for use and provide some imaginative description of this process, whether it be an elaborate ritual or a intense concentration etc.
[/i]

Typically the more cheap/powerful an ability the more preps a post it would need before it could be used. I should also point out the difference between preps and charges, as the former exists in T1, while the latter does not and is in fact some weird mutation of prepping that has evolved within the arena and used inappropriately by some players due to interpreting the rules of T1 wrong.