Salomon
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You probably played an unpatched version, at least it wasn't 1.5 or 2.1.
They are indispensable for provocation, and also for covering... there are many of them, but as monsters, they are the dumbest creatures!
Version 2.0 had 4 patches downloaded in a row... here.
Gargoyles are needed to put them in front of enemy archers.
;)