It's a bit irritating how out-of-sync our timezones are, Dwarmin. >_>
You only seem to be around between 4-9AM for me.
Yeah, let's just say if it has no mechanic effect, you can do it. Like, cleaning yourself off, no problem.
Making a portable air-bubble by sucking the water out around you underwater, so you can walk across the ocean floor? I dunno!
That's fine, pretty much exactly what I was hoping for The air-bubble thing is
not something I'd try unless it was basically the last option, so don't worry about it. =P
Just scale up. It'll be broken no matter what I use, so might as well go with established rules.
Also, there's eventually going to be a question of where all that stuff is actually going...
This ability is broken because of versatility. At least I'm not trying to fly up into the air and drop boulders on people. =P
Though a huge sword descending from the heavens would make a really cool finishing move, fluff-wise. Damocles.
In fact, I think when I'm considering effects related to failed rolls, those rolls done with an advantage will be generally slight negative in return for success/allow you to take back your action (You can land safely jumping on the Hydra's back, but you'll be prone, or do you abandon your jump and try again on the return swing?), but those done with a disadvantage will be a choice between two 'evils', as in you're going to succeed, but you probably don't want to. (You lost your grip and you're falling. Do you aim for the Hydras gullet, trying to balance between his teeth, or try and land aside the razor sharp poison spines on his head?)
That definitely sounds pretty good. Might end up needing tweaking depending on how often we get advantage/disadvantage, but I like the idea.