FLEXIBLE OPTIONS:

[Seeking Shuriken] is OPTIONAL if you don't need single target armor strip e.g. are using a slash based weapon or very strong AOE weapon e.g. slam [Magistar], [Falcor] etc

Aura is flexible for [Growing Power] for more strength or [Brief Respite] for shield gating.

HELMINTH OPTIONS

Use [Xata]'s Whisper for Thrax and Raw damage headshot weapons due to double dipping headshot multiplier (for 9x multiplier), double dipping faction bonus AND double dipping melee stealth multiplier (for 64x multiplier)

Use Roar if your weapons rely on status effects and use condition overload effect (e.g. Galvanized Aptitude/Savvy/Shot or [Condition Overload]). As of Update 30.9, the damage buffs from these mods do not interact with eclipse correctly and roar in fact gives a greater overall boost at maximum stacks.

Use Expedite Suffering for slash based weapons, and add [Stretch] over [Precision Intensify] to make range 79%. Expedite Suffering compresses the duration of all slash procs, then multiplies them and applies it in one single instance of true damage.

Use Nourish for bonus viral damage and FREE energy whenever you refund marks on 4 (subsume over 3 instead). Since nourish boosts all energy gained, this allows you to generate energy upon refunding energy when you lose marks.

Use Wrathful Advance for red crit melee memes