13zl
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Overall, everything is good, but Colossi don't need lightning, because then there would be incompatibility. It doesn't shoot; it walks and attacks with its heel, so why does it need lightning? Of course, you could give it the ability to shoot, but then it would need to be balanced (reduce the minimum and maximum damage by 10).
Colossi and Co. in the mod have become mechanical. We will consider the lightning around them as a kind of visual convention, like from a mechanism/magic. And with the upgrade, the creature can use these lightning bolts for attack.