Tartarians in 3.17

[Endoperez]

One quarter of your SCs being unavailable any given turn seemed very harsh for me. Your raiders can be caught without teleporting, and the casters who protect your armies with gem-expensive spells will force your whole army to stop when they go insane. If they stay behind with Flying Boots to fly back to the army, teleporters or Mind Hunters can kill them.

I haven't been on the receiving end a tartarian spam, but the insanity should make them much less useful.