Howdy folks!

For me, the companion should provide [Enemy Radar] and collect the resources while providing utility during combat. Also it's important to be hard to kill so you won't lose your little helper during the mission.

I tried to make a damage Vasca build but it didn't work out as expected. In the end I took the utility route.

Let's talk about the mods:

• Primed Animal Instinct + Fetch -> Those 2 give you the ability to see the enemies on the map and grab the loot when in close proximity.

• Link Health + Link Armor -> Boost your Kavat's stats so it doesn't get one shot.

• Primed Pack Leader -> Press E once or twice and your companion will be back to full hp.

• Medi-Pet Kit - The heal is not significant since you have Pack Leader, but the Bleedout Reduction is nice.

• Hastened Deflection -> Since shield gating it's a thing, it's better to have a small shield which regenerates faster instead of a big slow one.

• Tek Assault -> 60% chances to 'cheat death' seems reasonable.

• Transfusion -> One of Vasca's special mods. She revives you at the cost of her 20% health. You can heal her back with (Primed) Pack Leader. Sadly it doesn't work on Arbitration.

• Synth Fiber -> Extra armor is always good.

***A few words about Shield Gating

Shield Gating is an effect that occurs when shields are fully depleted, which prevents any excess damage leaking into the health pool. Warframes, Companions, and Necramechs gain 1.3 seconds of invulnerability upon hitting the shield gate, only resetting when shields are allowed to fully replenish. If the shield is still in the process of recharging after the gate has activated, the shield gate will only last for 0.33 seconds.

Other viable mods choices:

• Animal Instinct - It can replace Primed Animal Instinct if you don't have it.
• Pack Leader - It can replace [Primed Pack Leader] if you don't have it. Actually you don't even need the primed version, I used it just because I have it.
  The damage output of the [Vasca Kavat] is not relevant, therefore adding damage mods and [Hunter Recovery] is not efficient. Also Draining Bite it's a joke compared to Pack Leader, save yourself a mod slot and put something more useful.

Conclusion

I wanted to make a viable damage build for [Venari] but kavats don't attack often enough. I took a safer and more consistent route, making her tanky while providing radar and looting utility. What makes her special it's the capability to revive your warframe but it doesn't work in Arbitration so it's not a big deal. I will end it by saying Vasca it's one of the weakest companions (still worth building) which does what other do but less.

Check out my other companion builds:

• Carrier - Your ammo buddy
• Djinn - Self revive companion
• Panzer Vulpaphyla - The Immortal Fox
• Adarza Kavat - Critical Eidolon Hunter