Lunar item (blue). What the game says, what it really does, what each copy adds and what it pairs with.

Brittle Crown
Lunar item (blue)
Your hits sometimes give you gold, but taking damage costs you gold. Each extra crown, more both ways.
Game text: «30% chance on hit to gain 2 (+2 per stack) gold. Scales over time. On taking damage, lose gold equal to 100% (+100% per stack) of the maximum health percentage you lost.»
Stacking: Each copy adds the same, no cap.
There is no useful number: what changes per copy is under «Stacking», above.
a blocked hit does not cost gold.
many hits and few taken: gold non-stop.
Bought with Lunar Coins: 1 at Lunar Pods on the maps, 2 in the Bazaar Between Time.
Unlocked from the start: it can show up in any run.
Your hits sometimes give you gold, but taking damage costs you gold. Each extra crown, more both ways.
Stacking: Each copy adds the same, no cap.
Bought with Lunar Coins: 1 at Lunar Pods on the maps, 2 in the Bazaar Between Time. Unlocked from the start: it can show up in any run.
Sources: the game's English text (name and description), the Risk of Rain 2 wiki (riskofrain2.wiki.gg: this item's page, read on 31 October 2026; numbers, stacking formula and notes) and the wiki's survivor pages. The plain-words text and the synergies are ours. Icons: Risk of Rain 2 (Hopoo Games / Gearbox).