I can see where you're coming from. I didn't actually mean to imply that there can never be an anti-venom, just that there is none, right now. Goes hand in hand with the fact that nobody really knows about there being a venom to begin with. I'll change that bit regardless to make it less cryptic.

As for the shapeshifting aspect, I could probably take that out if it bothers you explicitly. It wouldn't take away -much- from a practical perspective. I just thought it'd be more interesting to play out.

Concerning stealth, in my case that's referring to the ability to 'disappear' in crowds via minor shapeshift-esque adjustments. That's all I really wanted to express and stealth was the most fitting single word for it.