It really is too bad, but live and learn. You'll know better for next time.
Keep in mind that, if you allow something that in the future threatens to mess things up, you can always screw the player then! After all, if he wants to take the fungus, he's accepting a certain (fun) risk of the unknown. It can turn into a whole adventure.
"So, it looks like some of the mushroom spores came into contact with potion residue. Have you ever heard of The Sorcerer's Apprentice?"![Devious :] :]](http://www.enworld.org/forum/images/smilies/devious.png)
Keep in mind that, if you allow something that in the future threatens to mess things up, you can always screw the player then! After all, if he wants to take the fungus, he's accepting a certain (fun) risk of the unknown. It can turn into a whole adventure.
"So, it looks like some of the mushroom spores came into contact with potion residue. Have you ever heard of The Sorcerer's Apprentice?"
![Devious :] :]](http://www.enworld.org/forum/images/smilies/devious.png)