Grown, not mined — a spongy ore harvested from the fungal clusters under the Cross. Its Spore Cloud trait keeps dealing damage after each hit.
Releases a corrosive spore cloud that deals bonus damage over time.
How the waterline works. The game counts Mushroomite's share of the total crucible: under 10% the trait is INACTIVE; 10–30% it scales linearly (SCALING); 30–35% is OPTIMAL (full 8%); past 35% it is OVERCAP — the trait stays maxed but the extra ores are wasted multiplier.
Exact top-up formula. Adding Δ ores also grows the total N, so the real formula is Δ₁₀ = ceil((N − 10n) / 9) for the 10% line and Δ₃₀ = ceil((3N − 10n) / 7) for the 30% sweet spot — never the naive "fill to 30%".
Worked example. Say your 50-ore crucible already holds 8 Mushroomite (16%, SCALING at 5.2%). To max out you need +10 more — landing at 18/60 = exactly 30%. And a tiny 30-ore forge holding 2 Mushroomite needs +2 to wake the trait (4/32 = 12.5%).
| Source | World | Chance |
|---|---|---|
| Mushroom Cluster | Stonewake's Cross | 31.9% (31.9%) |
Spore Cloud applies to weapons — these solver picks pin Mushroomite at the 30% sweet spot on the best weapon of its stage, the Oversized Letter Opener.
Trait coverage: Mushroomite 30% OPTIMAL
Highest score: 23.7 DPS on Oversized Letter Opener at 35.7% per forge — the no-compromise endgame recipe.
⚡ Load in CalculatorTrait coverage: Mushroomite 30% OPTIMAL
60 ores divides cleanly by 30% — every trait ore sits at exactly the sweet spot with zero rounding waste.
⚡ Load in CalculatorTrait coverage: Mushroomite 30% OPTIMAL
Built entirely from mined and crafted ores — no Tower of Hell drops or event items required.
⚡ Load in CalculatorEach recipe loads straight into the crucible with ores, RNG lock and target pre-set. Odds are per forge at the recipe's anvil world.
| Ore | Multiplier | Sell | Trait |
|---|---|---|---|
| Platinum | 0.8x | $6 | — |
| Bananite | 0.85x | $6 | 🔥 Potassium Rush |
| Quartz Shard | 0.75x | $6 | — |
| Mudstone | 0.72x | $5 | — |
| Marble Chunk | 0.9x | $7 | — |
| Tinplate | 0.9x | $7 | — |
| Cardboardite | 0.7x | $5 | — |
| Slime Ore | 0.95x | $7 | 🔥 Slime Membrane |
| Gold | 0.65x | $5 | — |
| Amber Chunk | 1x | $8 | — |
Mushroomite carries a 0.8x crucible multiplier — D tier, uncommon rarity — sourced from Stonewake's Cross. A crucible loaded entirely with Mushroomite forges at exactly 0.8x.
Spore Cloud caps at 30% of the crucible load: ceil(0.3 × N) ores — 15 Mushroomite in a 50-ore forge. At 10% it activates at 4%, reaching the full 8% at 30%.
Mushroom Cluster (Stonewake's Cross) at 31.9%.
Mushroomite is early-game filler: 0.8x multiplier is low, so swap it out once better ores from Stonewake's Cross or beyond are unlocked.