INTRODUCTION

[Oberon] Build for steel path and endurance missions focusing on using Reckoning + Hallowed ground to full strip enemies and to do passive damage via [Hallowed Reckoning] augment. Grouping helps [Hallowed Reckoning] to overlap, which can be via magus anomaly or [Nautilus] [Cordon]. Kills via [Hallowed Reckoning] have a 50% chance to produce health orbs which sustain energy via [Equilibrium]. Additionally, killing eximus and running [Synth Deconstruct] on your sentinel further improves health orb generation. Both Smite and Breach surge benefit from Arcane Arachne.

PLAYSTYLE

1. Keep Hallowed Ground (2) active and stand in the middle of the grass at all times to gain knockdown resistance. You can cast multiple areas of grass as you spin to cover the map as needed.
2. Cast Breach surge to blind enemies and mark them for spark production.
3. Cast Reckoning (4) while enemies are on top of Hallowed Ground in order to armor strip (full strip will require build up of Molt Augmented, which hits 100% strip after approximately 190 kills), while also producing a damaging field. Note, enemies MUST be standing on hallowed ground first for armor strip to occur.
4. Spam smite (1) on heavy targets with high health pool to produce stronger sparks, scaling with enemy health.

When shields break, consider using Vazarin Protective Sling for i-frames if necessary or just cast 4 to gain a few i-frames per cast (150 shield = 0.6s iframes)

BUILD SPECIFICS

Duration
Positive duration mostly helps uptime of hallowed ground so you don't have to recast as often, and as a bonus increases the blind duration of reckoning.

Efficiency
Positive or neutral efficiency is up to preference, but efficiency is needed for Reckoning since each casts costs 100 energy at base. Running 130% efficiency without [Primed Flow] means you should be able to cast reckoning 3 times from max energy without needing to pick up more energy orbs. Running 100% efficiency with Primed Flow means you could cast 7 times but would need about 2-3 times more energy to refill to max. Kills by [Hallowed Reckoning] produce health orbs which are converted into energy by [Equilibrium].

Range
Important stat since Hallowed Ground radius and angle scales with range (hitting 360 degrees at 234% range) and Reckoning cast and blind radius scales with range. We could slot [Overextended] + [Stretch] to try and hit a 360 degree hallowed ground but this makes hitting full strip on reckoning much more difficult. Alternatively you could rely on positioning or simply cast twice in opposite directions. [Archon Stretch] + [Augur Reach] + [Cunning Drift] hits 190% range which gives Hallowed Ground a 300 degree angle and 28.5m radius. [Hallowed Reckoning] also adds a bonus 45% range to reckoning.

Strength
Exactly 200% strength is required to full armor strip. This can be achieved with one of the following options:

OPTION 1: Transient Fortitude (55%) + Molt Augmented (60%) - requires build up of kills first (approximately 190 kills)
OPTION 2: Transient Fortitude (55%) + Umbral Intensify (44%) + Power Drift/Archon Shard - would need to replace [Augur Reach], [Rolling Guard] or [Natural Talent] with [Umbral Intensify], this means you would not need to build up any kills for immediate full strip and can drop Molt Augmented for something else like Molt Efficiency or Arcane Arachne.
OPTION 3: Corrosive Projection (-18% armor) reduces armor to 82%, meaning you only need to hit 164% strength for full strip. This can be hit with Transient Fortitude/Molt Augmented + Power Drift/Archon Shard alone.

Flexible Mods
Natural Talent - good quality of life to make the long casting animation of Reckoning much more bearable. Could replace with Amber Archon Shards. Can add Primed Flow for energy, or Umbral Intensify for easier full strip.

Rolling Guard - good quality of life for i-frames and clearing status effects, but hallowed does already clear status effects, so this is mostly up to personal preference.

Hallowed Reckoning - optional augment to take advantage of grouping and passive damage zones that can actually deal DPS when enemies are full-stripped.

Archon Shards

• Two Amber cast speed shards are basically mandatory to speed up the cast of reckoning, which you will be spamming alot
• Three Crimson strength shards can be used to replace power drift in the exilus
• Three topaz +dmg to radiation status enemies could be used to maximise ability damage.

HELMINTH OPTIONS

• Breach surge: blinds enemies, creates cascading damage sparks scaling from smite damage and hallowed reckoning damage, benefits from arcane arachne as well as smite
• Nourish: applies viral damage to smite and weapons, which works well on stripped enemies, gives energy multiplier to help sustain high energy costs of reckoning and smite use.

ARSENAL

[Rakta Dark Dagger] is a melee that regenerates shields on hit when used against enemies affected by a radiation proc. This synergizes somewhat with [Oberon] since three of his abilities cause radiation procs.

Companion
[Nautilus] is ideal for grouping.