One common cause of SLUDGE is exposure to organophosphorus insecticides (including parathion, malathion, and diazinon) or nerve gas, such as sarin. These agents phosphorylate acetylcholinesterase, thereby irreversibly deactivating acetylcholinesterase and raising acetylcholine levels and causing SLUDGE.
Every stone grants different abilities to its owner. The Infinity Gems (previously known as Soul Gems) are some of the most powerful artifacts in the Universe. Each one allows its owner complete omnipotence over one aspect of the universe: time, space, reality, mind, power, and soul. When all six are directly wielded together, nothing is impossible for their bearer.
With the exception of grand and black gems, soul gems filled yourself do not change in value from the none value to their filled value (ie. a Common Soul Gem valued at 50 when empty, will also be valued at 50 with a soul in it, even though a Common filled Soul Gem purchased from a shop is valued at 150).