Firstly, if you cast Subdue on Cyclops, their initiative will decrease. It is multiplied by 0.03 * magic skill; with an elf's magic skill of 14 and a Cyclops' initiative of 12, it will become 5. And wouldn't many Cyclops end up killing each other?
And finally, I don't understand what a magically enhanced ballista would achieve. By the way, the chance of finding it is only 2%.
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