Phantom Tarstone Guide: Nightgrasp Stone & Monarch's Vestige in Mortal Shell 2

What phantom tarstones do in Mortal Shell 2

A phantom tarstone belongs to the Infusion category — the tarstones that bolt an element or status effect onto every hit of the gear they occupy. Mortal Shell 2 ships with two confirmed phantom tarstones: Nightgrasp Stone on the weapon side and Monarch's Vestige on the offhand side. Unlike the lightning pair, where the weapon stone fits three weapon families, both phantom tarstones are locked to exactly one piece of gear each. The decision tree is simple: run the Black Needle and the Nightgrasp Stone is your phantom tarstone; run the Salvaged Trebuchaxe and the Vestige comes with it.

Phantom sits alongside Burn, Frost, Poison, Bloodcurse, Curse, Stasis, Trauma and Lightning in the Infusion roster, and follows the category's defining rule: at level 4 the Infusion goes permanent — Resolve cost drops to zero and the phantom effect stays on the gear for the rest of the run. Where community testing has not converged on exact scaling — phantom is the least-documented Infusion element — this page says so instead of guessing. Costs, exclusivity and locations for both phantom tarstones are fully verified, and that is what you actually need to plan a build.

Every phantom tarstone — full list

The complete phantom tarstone list on Hotfix 2.0 + Balance Patch 1 covers both phantom tarstones, with the same field wording as the master infusion tables:

That is the entire phantom tarstone pool, and no other element pairs its weapon Infusion with a dedicated offhand Infusion the way phantom does through the Black Needle and Trebuchaxe line. Running both phantom tarstones at once is a clean build identity: phantom on every melee strike, phantom on every offhand attack. Note that neither phantom tarstone can move to other gear — a phantom tarstone's host is fixed, which is why this page maps both hosts in detail. The Build Planner confirms both fits the moment you select that gear.

Nightgrasp Stone — the weapon phantom tarstone

Nightgrasp Stone is the phantom tarstone that sees real play, because the Black Needle is a genuinely strong main weapon: a fast light weapon community guides consistently recommend for Genessa builds, where attack speed keeps Resolve flowing into Faithful Doubles. The stone costs 30 Resolve while leveling, applies its phantom tarstone effect to every needle strike, and — like every Infusion tarstone — turns permanent at level 4, deleting the Resolve cost entirely.

The pickup is refreshingly concrete by soulslike standards: go to the base of the Tower and light 3 candles. No boss gate, no quest chain — walk in, light the candles, take the stone. A free weapon phantom tarstone this early is why the Clone Army build slots it into the weapon Infusion slot immediately: an extra damage type layered onto a summoner's offense, obtained without a fight.

While it levels, the 30 Resolve cost is the number to manage for a leveling phantom tarstone. Fast weapons generate Resolve efficiently — the Black Needle's whole job in the Genessa pairing — so the weapon hosting the phantom tarstone is also the weapon that pays for it. On a fresh save you will re-activate it manually; that friction vanishes at level 4.

Monarch's Vestige — the offhand phantom tarstone

Monarch's Vestige is the offhand-side phantom tarstone: 20 Resolve to activate, permanent at max, exclusive to the Salvaged Trebuchaxe. The pairing is so tight that "running the Trebuchaxe" and "running a phantom offhand Infusion" are the same decision — the planner will not offer the Vestige to any other offhand.

The honest caveat, same as with the lightning offhand stone: the Vestige's retail location is unconfirmed. Community reports have not pinned down a spawn or drop source, and we will not invent one. Chase the Trebuchaxe itself; the phantom tarstone has a home in its Infusion slot whenever it surfaces in your world, and this page updates within 24 hours when a verified location lands. Of the two phantom tarstones, the Vestige is the one most players will meet last.

Strategically, a phantom tarstone on a heavy offhand plays a different role than on a fast main weapon: fewer activations, more impact per activation. The 20 Resolve cost is cheaper than the Nightgrasp Stone's 30, and on builds that swing the Trebuchaxe selectively the phantom layer is gravy on big hits rather than a DoT engine.

Best shell for a phantom tarstone build

Genessa, the Wayward, is the shell that makes phantom tarstones shine — and the reason is mechanical: her Faithful Doubles clones execute your weapon's attacks including Infusion tarstone effects. A phantom-layered Black Needle means every clone strike also carries the phantom Infusion. The stone stops being "your hits" and becomes "your hits plus the whole clone army" — no other pairing in Mortal Shell 2 multiplies a phantom tarstone like this. The Clone Army build runs Nightgrasp Stone in its weapon slot for exactly that reason.

Genessa pairs with the Black Needle for a second reason: the shell is extremely Resolve-hungry, and a dry Resolve bar collapses the summoner strategy into plain melee. A fast needle regenerates that economy faster than any heavy alternative — so the weapon hosting the phantom tarstone also feeds the shell. Devout Stone (+Resolve gain) closes the loop in the Support row. The Shell Tier List has the full S-tier reasoning.

Outside Genessa, no other shell has documented phantom-specific synergy — phantom is a second damage layer for whoever holds the Black Needle. That is still worth having: on a Tiel crit build, a phantom tarstone rides along on every hit for free. But if you are choosing a shell specifically to justify the stone, the answer is Genessa.

Black Needle & Salvaged Trebuchaxe — the two host weapons

Both phantom tarstones are single-gear stones, so this section is short by design. The Black Needle is one of the fastest main weapons in Mortal Shell 2 — community guides pair it with Genessa for Resolve flow and with Proxima for stacking elemental DoT layers quickly. Fast application is the appeal: a phantom tarstone on the Needle applies on nearly every swing — more uptime than any slow weapon gives the same phantom tarstone.

The Salvaged Trebuchaxe is the offhand counterpart — a heavy offhand whose Infusion slot belongs to Monarch's Vestige alone. Community usage is thinner, partly because the unconfirmed location keeps the pairing out of most players' hands. If the stone appears early, the Trebuchaxe becomes a legitimate build anchor with its phantom tarstone built in.

One warning covers both: a phantom tarstone fills the gear's only Infusion slot. Nightgrasp Stone and Serpent Stone poison compete for the same slot on the Black Needle — pick the element, commit, and let the offhand Infusion and Support stones (Auspicious, Headman's, Devout) cover other bases. Stone levels stay on the stone if you swap weapons, so decide before sinking Tarforge Coins.

Upgrading a phantom tarstone to permanent

Phantom tarstones level exactly like every Infusion tarstone: kills while equipped grant the phantom tarstone XP, levels 2+ also cost Coins, and the Tarforge — unlocked by giving the Etching Needle (bone chest before Magdalena) to Franz in Marrow Keep — does the upgrading. Full step-by-step in the Tarstones upgrade guide.

For a Genessa build, the Nightgrasp Stone deserves to jump the queue: the standard priority ranks a main weapon's Infusion around sixth overall, but a summoner re-rolls the phantom effect through every clone, so value per level runs higher than for a solo weapon. Rushing the phantom tarstone to permanent mid game is one of the cheapest power spikes the archetype has in Mortal Shell 2.

Phantom tarstone FAQ

---