Verglas Prime: https://overframe.gg/build/728191/

This is the DPS build for [Nautilus]. I've replaced [Primed Animal Instinct] by [Tenacious Bond], because at the level I'm at, more resources aren't needed, and we now have innate [Enemy Radar]. If you don't feel like you need [Primed Animal Instinct] as well, you don't need to Forma that slot, but if you already did, [Tenacious Bond] will fit there without any issues, assuming you have all the other Forma done.
Note: If you want to go the extra mile, try to find a Critical Chance Riven for your [Verglas Prime], and you'll just be happy as a clam! A CC Riven with [Critical Delay] will get the [Verglas Prime] over 50% CC, which means [Tenacious Bond] will be active. You do NOT need this, but if you still want the benefits from [Tenacious Bond], you have to use the [Vulklok] instead, since that weapon can get to 105% CC with [Critical Delay].

For a more support kind of build:
[Cordon], [Synth Deconstruct], [Enhanced Vitality], Enhanced [Redirection], [Assault Mode];
[Primed Regen], [Manifold Bond], [Primed Animal Instinct], [Reinforced Bond], [Vacuum].
Note: You can also run [Tenacious Bond] here, but because you really want the [Verglas Prime] for the Cold crowd control, you really need a Riven. The support build for the [Verglas Prime] is in the description for my "[Verglas Prime] DPS" build.