Thanks for your input guys. I don't have the Silent Image spell (wizards fo' life) yet, but I like modifying the play field to help out the team as well (zBs, if the enemy doesn't fall into a pit, they have to jump away from my friend).
Speaking of that, does a reflex save to not fall into a pit count as an attack of opportunity for whoever is beside them if they are moving more than 5 ft?
Also can a pit hit into a wall for example
www
www
ggg
ggg
Can that be turned into
www
ppp(doesn't even need to be on the same area)
ppp
ggg
I want to know to see if being up against a wall will make it an awful idea to place a pit, since it would hit my ally as well.
I know these are all speculations, since I don't know if there is RAW for a lot of it, but I'm trying to get ideas of what other GM might do for situations like this so I can show these ideas to my GM when I try and do stuff like this.