Sight stone

and are nearly never used and I think it should be buffed for that reason. I think the amount of health they carry should be increased.

Should have 300 health

+ = Should have 800 or 1000 health

Yes, I understand you are also paying for utility. What if you made the health increase over time, as with

There are a few health based champs [ ] That would like this change. but wouldn't make them overpowered