The Fulminant Stone is a Sidearm Ability Tarstone you buy from The Collector — a night-only merchant near the Abandoned Outpost beacon — for 1,500 coins, and it fires a heavy-caliber round that sets off multiple explosions around your target.
The Fulminant Stone is one of a handful of Tarstones you can only get from a merchant who never appears in daylight, which is why plenty of players finish the game without ever picking it up. It slots into your Sidearm, costs 60 Resolve to fire, and turns a single trigger pull into a cluster of explosions — the sort of thing that cracks armored enemies open fast. Below is where to find it, exactly what it does across its tiers, and how to level it up.
Fulminant Stone at a glance
| Attribute | Detail |
|---|---|
| Type | Ability Tarstone |
| Slot | Sidearm |
| Activation cost | 60 Resolve |
| Price | 1,500 coins |
| Sold by | The Collector (night only) |
The stone sits in the Ability category, so it never competes for space with your Support or Combat Tarstones.
How to get Fulminant Stone in Mortal Shell 2
The whole purchase hinges on one thing: The Collector only exists at night, sits at an unmarked table, and never shows on your map. Turn the world dark first, walk out to the Abandoned Outpost beacon, and he will be waiting past it at a candlelit table.
Call the night
Hand the Gloombound Flame to the NPC on the raised platform in Marrow Keep and accept the offer to summon night; the same NPC can switch you back to day afterward, so there is no risk in toggling. You obtain the flame from the Widow’s Overlook beacon or the Great Arbiter of Flesh area.
Head for the Abandoned Outpost beacon
With night up, walk toward the Abandoned Outpost; if you have never been, it will not be on your map yet, so steer by the tall blue beams of light until the “beacon found” banner appears.
Cleanse the beacon
Cleanse it on the spot so you get a checkpoint and a fast-travel point — until you do, there is no safe fallback anywhere near the merchant and the dark walk back is dangerous.
Find The Collector
Push past the beacon into the outpost itself; a figure labeled simply as a merchant sits at a candlelit table. Walk up and open trade.
Buy the Fulminant Stone
Purchase it for 1,500 coins.
What the Fulminant Stone does across its tiers
| Tier | Effect |
|---|---|
| Base | 60 Resolve fires a heavy-caliber round that triggers 3 explosions around the target |
| Upgraded | The shot triggers 5 explosions around the target |
| Top | Each explosion deals roughly 20 Break Damage |
Every activation spends 60 Resolve to fire one heavy-caliber shot that detonates in a burst of explosions around whatever you hit. Leveling it does not change the Resolve cost — it stacks more explosions onto that single shot, and at the top tier turns each of those explosions into a chunk of Break Damage. The interface labels this as three or four tiers, but the actual progression below is consistent.
Key That top tier is where it earns its slot. Against a big or heavily armored enemy, one trigger pull stacks Break Damage from five separate hits at once, which shreds posture far faster than raw damage would — exactly what you want for cracking a tough target open and setting up a heavy follow-up.
Equip the stone and fight | LaserBolt/YouTube
Equip the Fulminant Stone the moment you buy it — its XP bar fills on its own while you fight, so the sooner it is on your Sidearm, the sooner it reaches the five-explosion and Break Damage tiers.
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Frequently Asked Questions
Can you buy more than one Fulminant Stone from The Collector?
No. The Collector’s stock is limited and he carries exactly one of most of his items, the Fulminant Stone included, so you cannot return later to pick up a second copy. Work out what you want off his table before you start spending.
Do you have to upgrade the Fulminant Stone for the Stoned trophy?
No. Upgrading Tarstones is not required for the Stoned trophy or achievement — that one only asks you to obtain the stones themselves, not to max any of them out. The exact number the trophy needs varies, so repeat the farm for more rolls. Upgrading the Fulminant Stone is purely for combat power.
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