Parasitic Link is one of the strongest buffs in the game to give to ally nuke frames. We subsume an additional damage buff or an ability that grants some basic QoL.
Roar is chosen because it significantly increases the damage of most nuke abilities but Empower or Dispensary can also work if your team is running a slightly off-meta combination of abilities.
Terrify and Pillage usually need an insane amount of Strength to strip armor and shields but due to the way Parasitic Link increases ability strength they can also work on this build.
Ravenous is replaced because it competes for your mutation stacks with Parasitic Link and your Undying passive. The maggots can struggle to pay back their stack cost on lower range builds. Larva can be replaced if you're camping doorways.
[Rolling Guard] protects you against extremely high level enemies but it can be replaced with any other mod that fits into the polarity plan if you have another form of protection in your team.
Range mods can be replaced but will require you to stay constantly next to your link target. It also limits the usability of Larva to gain stacks.
Arcane Consequence helps you to quickly get to new targets in between waves to generate stacks. Arcane Agility can also be used if you're abusing the [Combat Discipline] synergy to proc it.