Zero Forma [Frost Prime] build that easily deals with steel path defense, mobile defense can excavation. Since lvl 100+ enemies will quickly [Shred] through even the thickest snow globes, we instead focus on the hard cc given by Avalanche. Enemies can't shoot the objective if they are frozen solid. Snow Globe is still useful. but more as an early warning system, giving us time to react between cc casts, and slowing down anything that gets too close to the objective.

It is important to have Energizing Dash from the Zenurik focus tree leveled as highly as possible. At max rank, you will have 5 energy [Regen] per second. Avalanche takes 25 energy to cast, and lasts 8.4 seconds, allowing you to reliably fill up your energy pool while still keeping everything locked down forever. [Icy Avalanche] also helps make us a bit more tanky to avoid getting one shot as we move around and [Hunt] down priority targets. These targets are mainly eximus units, specifically energy leech, or corpus nullifiers. Obviously on defense you will have to kill everything, and excavation you will have to kill energy cell carriers.

Mod Replacements: Prime flow and prime continuity can be downgraded to their non-prime variants, but this reduces the duration of Avalanche to only 6 seconds. If you don't have prime [Continuity], then it might be a good idea to replace [Stretch] with [Constitution] or [Augur Message] to make it easier to lock everything down forever. I also find it hilarious to replace [Icy Avalanche] with [Chilling Globe] on infested missions, since they don't have as many ranged options, and anything that tries to [Rush] the objective has a good chance to get frozen automatically.

Arcanes: Don't really matter. Guardian is nice if you have it to help not get insta-killed.