Synapse

The Synapse is the Xol flying support unit, a Tier 2 body assembled by merging two Spectrons with a further 50 hexite and 150 flux on top. It heals nearby allies it touches for 8 health a second, carries the Overclock buff that the faction uses to accelerate a push, and unusually for a healer it also fights: Stellaris Lash hits ground and air at range 5.5 for 30 damage, which is 17 damage a second.

Figures below describe the September 2026 Early Access build, the one carrying the identifier ZS.c36778, and they move with the weekly patch cadence. Roughly half the versus roster had a stat touched in the fortnight before that build was captured, so treat every number here as dated rather than permanent.

Stat Block

Weapons

Abilities

Upgrades

No Synapse specific upgrades exist and the Synapse has no molten mode. The World Forge upgrades reach it as a Xol army unit, and Casting Range is the one that matters most here because both of its support effects are range limited.

Conversion Costs

Replicate is the Xol conversion mechanic, paid out of the same top bar power pool as the Grell Infuse and the Legion Reanimate. Rather than buffing a unit it copies one, producing a second body from an eligible ally. Since the balance pass of August 11, 2026 it also works on molten units, at twice the usual power cost. Eligibility is not universal, and the tags on a unit record are what say which of the three conversions apply. The Synapse is eligible for all three at an identical 11.875 power each, the second most expensive conversion in the faction behind the Eradicator.

Role

Eight health a second is a modest heal, and the qualifier matters more than the number: Touch Heal applies to units the Synapse touches, not to units within an aura at range, so keeping it useful means physically threading a flier through a moving army. The reward for doing that is continuous, free and applies to ground and air alike, which over a long fight is worth considerably more than the per second figure suggests.

Overclock is the burst half. Thirty seconds of cooldown for five seconds of a damage and movement buff on everything nearby is a push button, and the faction hands the same ability to the Xol Harvester on a 60 second cooldown and applies it automatically to Rollers thrown by an Eradicator. A Synapse behind an attack is what makes the Xol timing pushes land.

The 17 damage a second on a support unit is not incidental. It hits air, which most of the faction cannot, and it means a Synapse contributes even while its heal is doing nothing. Armour is a number as well as a type. It subtracts a flat amount from every incoming hit with a floor of 1 damage, so it blunts many small hits far more than one large one. The Synapse itself carries 250 health with Light armour and no armour value, so it dies to any dedicated anti air that reaches it and has to be flown behind the line rather than with it.

Faction Context

The Synapse unlocks at the Molten Core alongside the Echo and the Defiant. Because it consumes two Spectrons, a Synapse competes directly with the Eradicator for the same banked bodies, and the free 20 second Unmerge added on August 11, 2026 is what makes that a reversible choice rather than a locked one. See Units for the shared stat block and Heroes and Commanders for commanders.

Counters

Balance History

Notes

The roster record for this unit is COMPLETE. Every core field is published.

There is an unresolved conflict on Overclock. The entity record describes the buff as +35% damage and movement speed for 5 seconds, and the same wording appears on the Xol Harvester and on the Eradicator ability that Overclocks thrown Rollers. The studio patch note of August 11, 2026 instead records the Overclock move speed bonus being increased from +35% to a much larger figure, written without a percent sign in the original post. The studio note is the authoritative record and it is dated a month before this build, so the movement half of the buff is very likely larger than the +35% the entity text still prints. The damage half is not in dispute. Because the studio figure is ambiguous as written, this page reports the entity wording and flags the conflict rather than publishing a number it cannot verify.

Per unit numbers are drawn from a community maintained entity catalogue that the studio links from each of its own faction pages. It is the only place the full stat block is published, and it is not a studio document, so the figures are best read as careful community documentation of a build rather than as an official specification. Dated balance notes, by contrast, come straight from the studio patch posts.