Either make Kuru less deadly, or make Prions harder to get.

[UrsulaMejor]

Requiring it to need at least 5 units would be sufficient, I think. It's harder to get massive amounts of Prions than you'd think it'd be (but also simultaneously easier if you know a couple neat tricks). I think we'd see a lot less prion-shenanigans if you didn't only need 0.000001 units of prions to kill someone.