Oxygen Bottle RP

Step One: Emptying the Bottle
First, the bottle must be completely emptied. Krath tend to take a very literal view of this type of instruction; completely emptying the bottle means evacuating it to as close to a 100% vacuum as possible. A 10% vacuum requires a difficult roll. A 90% vacuum requires a very difficult roll. A 99% vacuum requires a heroic roll, a 99.9% vacuum requires a Heroic (with a +15 modifier) and so on. This power must be kept up or the bottle will immediately flood with air again.

At any time, a roll of 60 will tell the Krath exactly how many molecules remain within the bottle at any given time. One corollary of this is that on a very difficult sense roll for any Krath with telekinesis power, the Krathi can tell how much something weighs to the nearest 0.001 milligram.

Step Two: Filling with Oxygen
This is the really difficult part. The Krath must now permit oxygen molecules (and no others) to re-enter the bottle. His earlier telekinesis roll must be kept up, he needs a difficult sense roll in order to identify the molecules he is supposed to be admitting, and he needs a Heroic telekinesis roll in order to make his barrier selectively permeable.

This process normally takes 12 hours. The Krath must roll once for each hour. The Krath may speed up the process, by adding +10 to the difficulty of each roll for each hour saved.

Written by Kieron Scott