There absolutely should be a limit with extraordinary powers, especially when applied to getting out of trouble. The problem with the extraordinary powers and trouble is that it's all to easy to fall into a deus ex machina situation, quickly defined as being:
- In Greek and Roman drama, a god lowered by stage machinery to resolve a plot or extricate the protagonist from a difficult situation.
- An unexpected, artificial, or improbable character, device, or event introduced suddenly in a work of fiction or drama to resolve a situation or untangle a plot.
- A person or event that provides a sudden and unexpected solution to a difficulty.
Not something you really want to inject into your story as it removes much of the conflict the character needs to go through in order to grow, and that's dangerously close to what you're thinking of doing here.
Now, you have foreshadowed that he can do something amazing, which opens the door for future use, but will use of it now detract from the later use toward the end? Does it feel right to get out of the situation by using it, or does it feel like you're defeating yourself or taking something away from character or story by using it here? Does it feel at all like it's the easy way out and because it's less effort that's why you're drawn to it?
Having established it can be done, it's entirely plausible he could do it now, though if he does, I (personally) would reserve it as a desperate act. Say, Pasadomal (terrific name, btw) is wounded by the Lizari and falls out of Toshu's sight. The wound doesn't have to be fatal, of course, nor should it be, but Toshu, in the chaos of the moment catches Pasadomal go down, presumably with some sort of cry from pain and surprise, and in a panic, without knowing what else to do, he calls on this power. In this situation you're giving him a reason to do something extraordinary, rather than doing something extraordinary because you don't know what else to have him do.
Always keep in mind the drive of the character, the motivations, what keeps him going, and what could shatter his world. Just how desperate would he get if his companion were to be killed? What level of panic would he feel? What would it take to get him desperate and panicked enough to attempt a power he (I assume) barely understands.
You might also consider giving the power consequences he's aware of that make him hesitate to use it. Consequences he perhaps learns of first hand that would be reason to give him pause, and reason to make him use it despite those consequences to save a friend. I think one of the best things you can do when giving someone some god-like special ability is to make sure it has its own drawbacks, otherwise what reason does the character have, other than altruistic intentions, to not use the power at will? Providing the potential is one thing, but giving someone access to phenomenal, or even semi-spectacular power with a vague understanding of "because it's important for this particular scene in the future" gives a sense of unreality and makes it hard to swallow what the character is doing, in part because it can feel like you just stopped trying at that part, stuck in a deus ex machina and moved on.
Follow?
