+275% Energy Max
Improves Casting Speed on Warframe abilities if applicable.
+50% Casting Speed
+24% Ability Duration
40% Energy spent on abilities is converted to Shields.
+55% Ability Duration
Invisibility Augment: Weapon noise is reduced by ?% while invisible.
+40% Faster Knockdown Recovery
+28% Ability Duration
+30% Ability Efficiency
+99% Ability Duration
-66% Ability Range
Enemy armor reduced.
+15% Ability Range
The first Arcane slot is Arcane Essence.
If doing solo spy, replace Corrosive Projection with Energy Siphon. By the time invisibility wears off, ES will have gotten you enough energy to recast due to high durration and Arcane Essence.
This is still enough range to Switch Teleport past otherwise slower to get around laser gates in spy vaults.
Why no survivability mods?
Being invisible is the survivability, stupid.