You'll be investing 5 forma into this weapon in order to get the mr from it as well as to level it up to lvl40. Yes it goes beyond lvl30 just like Kuva/Tenet weapons.

I run Cleaving Whirlwind because all the stance mods are shit and got nerfed hard, so looking at all 3 of them, this one gives the highest damage multiplier. Remember when you're playing the game, only use E spam while not moving at all, that one does the most damage. You can sometimes use E spam while moving to spin2win for fast room clear of trash mobs, but it's damage got nerfed so hard, it has no forced status procs anymore and you get dizzy after spinning too much. Don't use the E spam while blocking and moving because even tho it has higher dmg multiplier it's really shit to use. Here's a screenshot from wiki:

Do not run Sacrificial Steel for more crit chance because running two crit damage mods is a higher dmg increase. Also don't be fooled by the website saying that you're reaching past 300% cc with this mod, you're not, the website builder is just calculating the cc twice for heavy attacks.

Funny enough [Paracesis] already reaches red crits ( 200%+) without even using Sacrificial Steel but if we would use it we would only get up to 269.7% cc giving us extra 69.7% chance to red crit. Not quite up to the 338% that the website is showing us. It's also not beneficial. Why? When we could run Gladiator Might over it for more crit damage? Well I did the math for you.

• Crit Tier Multi' = 1 + Crit Tier'' x ( Modded Crit Multi''' - 1)

' the critical tier multiplier means our critical damage
'' the crit tier represents yellow/orange/red crits, yellow = 1, orange = 2, red = 3, red(tier4) = 4, red(tier5) = 5 ect... the critical hits go infinite
''' modded crit multi represents our base crit multi of the weapon times 1 + all the critical multi from the mods

So our critical damage formula for the [Paracesis] if we would red crit with only Gladiator Might equipped as our crit damage mod will be:

1 + 3 x ( 2.6 x (1+60%) -1 ) = 10.48 critical damage

If we would red crit with only Organ Shatter equipped as our crit damage mod, our critical damage would be:

1 + 3 x ( 2.6 x (1+0.9) -1 ) = 12.82 critical damage

In this case we would [Reach] higher critical damage but only at a 35.6% consistency because our critical chance would be 235.6% with Blood Rush + Sacrificial Steel - Gladiator Might equipped. But this is not worth since it's very inconsistent and I'd advise you to give up on the red crits dream and focus on those juicy orange crits instead. If you're really adamant on having red crits run Arcane Avenger on your warframe for the flat +45% cc increase and an Adarza Kavat for the Cat's Eye +60% flat cc increase.

And our critical damage formula for the [Paracesis] if we would orange crit with Gladiator Might and Organ Shatter equipped as our crit dmg mods would be:

1 + 2 x ( 2.6 x (1+60%+90%) -1 ) = 12 critical damage

So to summarize it, I'm sorry but running double cd mods is better than adding more cc.

This is the maxed out potential build this weapon can have without a Riven mod. And even with a Riven, the dispo is so low that you wouldn't be achieving much with it.

If you want to check out my Paracesis build againts sentients take this link: https://overframe.gg/build/255611/ (they share the same polarities)