Talk:Chroma (Warframe)/@comment-10763492-20150329132326

Did anyone actually managed to get 100% stamina reduction with Elemental Ward (using poison element)?

I think there is a hard cap or the Power Strength applies as following: 1 - 1 / STR * 0.3 = reduction.

The 0.3 being the base stamina cost without any mods (70% reduction, so a 30% cost). And STR being the total power strength you've got with all your power mods. So the formula applies in a way that the power strenght is boosting the factor by which the cost is reduced.

By default, the reduction is 70%. Meaning you're using 30% of the stamina. That means a reduction by a factor of 3.3333...

Basically, if you have a power strength of 200%, the reduction will be 1 - 1 / 2 * 0.3  = 0.85. So with 200% power strength, the stamina reduction will be 85%.

In other words, the 200% power strength brings the reduction factor up to 6.666... (3.3333 * 2), which is the equivalent of 85% stamina cost reduction.