Hello there, we were having a discussion on the boards about how the various spell immunities work and we are confused about exactly how a Golem's spell immunity does work.
Think of it as unbeatable SR.
It is clear from the spell that the spell is treated as infinite/unbeatable SR against the warded spells, but the golem description seems to indicate that it might be different.
No, that's right.
So, is a golem's spell immunity unbeatable SR, or is it just immune to all spells?
If the former, can I assume that is it affected by a Maze spell?
Yup (Maze is SR: No; you build a maze around the golem).
What about the fire from a wall of fire?
Wall of Fire is SR: Yes, so the golem is immune. Note fire has special effects on some golems
If the latter, what about things like Greater Magic Weapon, Rock to Mud cast under them, etc?
If the SR entry is "no" the golem does not ignore the spell's effects.
The text on the Anti-magic field seems to indicate that some spells that aren't listed under their description can affect them, but we're not sure what.
See previous answers (and your own excellent judgement).
