[@VitaVitaAR]Could there possibly be a dragon-like creature he could draw the ability from, or something else that could give him what I had in mind. 

[hider=My idea for the Trait]

Basically, while he's not aware of this, his body will reactive draw on his innate mana pool, of which he has a huge amount due to this trait, to increase his strength and physical abilities to an amount to help him survive threats to his life or something that he can subconsciously call on. However, if the threat to his life is great enough that he believes he really could die, he would transform on reflex, taking on a monstrous form that would have tough scales, immense strength, and complete berserker tendencies. He'd have a breath attack the, by default, is fire, but if he's hit by any other elemental spells, he'll adapt to that spell, gaining resistance to that element instead of whatever the previous element was and being able to breath it. The elemental change last 24 hours after first hit, but can still be changed afterwards by hitting them with a different element.

After the threat has either fled or been terminated, he'd revert to normal, feeling as if he'd just blacked out and having no memory of whatever happened during the time he was transformed. The longest he'd be aable to stay in this form is around 30 minutes, as at that point his mana pool while be drained completely, leaving him either greatly weakened or unconscious if his body was heavily damaged. Wounds taken before the transformation are healed completely when it happens, and wounds inflicted during the transformation are partially healed when it has ended. 

So Pros to beast mode(if you have another beast that could fit most of these, than I'd be find using that instead): Very strong, increase in senses, is a bit faster than normal, can fly for a short amount of time. can breath out an element and has resistance to that element, durable scales and claws

Cons:Berserker tendencies, takes a lot out of the user, completely animalistic, can't control it at all, is probably not going to be a common occurrence 

Pros to base trait: Can increase physical attributes in respond to stimuli, 

Cons: Can't consciously control it, completely instinctual and hardly ever able to use it offensively

[/hider]

I'd understand if you;d find this kind of ability in the RP, but I'm hoping we can meet some kind of half-way on this. Maybe we can talk it out through a PM or something?