Rebalance artifacts

[Lady Birb]

There is also a 5% chance for them to not have a cooldown at all, which could certainly be removed if one is concerned with things such as "balance". :p

I think considering the randomization, the odds of you finding a powerful weapon artifact with no cooldown are so low that i dont really see this as a major problem

Eh, I wouldn't consider arts able to be consistently powerful to the point of needing a nerf.  They certainly don't have the regularity of Telescience, Toxins, or Chemistry.
All my own opinion though.

why most rounds (in my experience) you dont get an artifact that has any practical use at all

For those not aware, right before this thread was posted there was a round on 1 where a certain robust player got a no cooldown instant KO lightning artifact as a traitor and proceeded to kill literally the entire station except an afk guy in a locker. I would suggest removing the 5% chance of no cooldown and capping lightning artifacts at 2 hits to stun, since we did the same thing for melee artifacts and we have been removing most one-hit stuns in general.