+55% Ability Strength
-27.5% Ability Duration
+30% Ability Duration
+40% Faster Knockdown Recovery
+28% Ability Duration
+40% Ability Efficiency
-40% Ability Duration
+275% Energy Max
Improves Casting Speed on Warframe abilities if applicable.
+50% Casting Speed
+30% Ability Efficiency
Enemy armor reduced.
+15% Aura Strength
+15% Aura Effectiveness
The build is meant for 5x3 / 6x3 tridolon speedrun tempo.
*Assuming you already know the roles for these specific run.
If you don't have the exact same things, just improvise it.
Eidolon scream duration is about ±3s (+wave travel time).
So harrow's duration ranging from 70% - 95% (4.2s - 5.7s invulnerability / 8.4s - 11.4s critical chance) should be fine.
Though, ideally i'd recommend to use the highest possible of that duration range so it can cover up the most of buff & invulnerability duration without interfering with your next cast.
Arcanes & Companion
• Combination of Arcane Energize & Sahasa Kubrow's dig to reduce energy pad consumption.
• or Wyrm with Negate mod could prevent some potential staggers, knockdown, or energy drain.
• Arcane Guardian for a bit of survivability.
Corrosive Projection & Coaction Drift
You should consult this with your squadmates. You'll only want 3 Corrosive Projection & 3 Coaction Drift to strip the armor as much as possible without fully removing their entire trait. So you can still keep that bonus 75% radiation damage with the least damage reduction.