Two Prophets Game!!!

[Micah]

I don't think there's a threshold number before craziness happens, the number just influences the probablity of it occuring (and if you haven't had a crazy commander before it's a turn-to-turn effect, not somethng that will happen every turn once it happens once). The crazy actions tend to be useless, but won't cause the commander to attack or burn gems, as Shovah said. I'm pretty sure even sneaking crazies are safe, but I'm not 100% on that. My rlyeh dominion-induced craziness had my friend's commanders performing a "heretic preaching" action sometimes that might have hurt his dominion some, as well as one action that was called "that's not a star." No idea what that one did. My insane rlyeh commanders all took semi-normal actions. Semi because non-mages and non-prests would still preach, research, or site search, plus the prophet option. I'm not sure on how many brands of crazy the game has in total, but at least two it seems.

[Taqwus]

...appears to cause the random choice of orders subject to certain rules.

Insane commanders will not move. They will not cast spells, start the construction or destruction of buildings, forge items, pillage provinces, reorganize troops, take gear from the lab (hmm, there's an idea), or change their squads' orders. I have never seen them hunt for blood slaves, and that may be barred as that costs unrest. They will not attack, unless they were sneaking in enemy territory and adopt a non-stealthy order.

They may research or site search (even if completely ignorant of magic), preach, defend, patrol, or become prophet (regardless of previous prophetizing). They may enter magic sites.

[Meglobob]

Thanks Shevah32, Micah and Taqwus. That's a relief, so they are insane but not dangerously insane. Cool, I can live with that...