http://i432.photobucket.com/albums/qq46/jessesnipesyou/glitch.png so, unless i accidentally used a mushroom or did something else that would do this(witch is entirely possible, i wasn't paying much attention) i got a skill 3 ahead of what i'm currently at and i don't think i'll be running out of mana soon..
Nothing, the game just gives you random status updates every once in a while. They're in text.xml. There's one about mining more Vespene gas, for instance.
http://www.dredmorwiki.com/wiki/Pan-Galactic_Gargle_Blaster Gives the buff. Quite nice, but ruins one reason for a caster (who won't go oom due to regen) to delve into Astrology