Iron reforged in mass graves; its Grudge Spikes trait turns armor into a porcupine.
Spiteful barbs punish anyone who hits you.
How the waterline works. The game counts Graveiron's share of the total crucible: under 10% the trait is INACTIVE; 10–30% it scales linearly (SCALING); 30–35% is OPTIMAL (full 12%); 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 Graveiron (16%, SCALING at 7.8%). To max out you need +10 more — landing at 18/60 = exactly 30%. And a tiny 30-ore forge holding 2 Graveiron needs +2 to wake the trait (4/32 = 12.5%).
| Source | World | Chance |
|---|---|---|
| Ruined Statue | Forgotten Kingdom | 17.4% (17.4%) |
| Bone Pile | Forgotten Kingdom | 18.1% (18.1%) |
Grudge Spikes applies to armor — these solver picks pin Graveiron at the 30% sweet spot on the best armor of its stage, the Knight's Brigandine.
Trait coverage: Graveiron 30% OPTIMAL
Highest score: 455.6 EHP on Knight's Brigandine at 45.5% per forge — the no-compromise endgame recipe.
⚡ Load in CalculatorTrait coverage: Graveiron 30% OPTIMAL
Closest distinct recipe to a clean 30% split (rounding waste 0.1 ores).
⚡ Load in CalculatorTrait coverage: Graveiron 31% 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 |
|---|---|---|---|
| Serpentinite | 2.3x | $17 | — |
| Dungeonite | 2.1x | $16 | — |
| Lapis Lazuli | 2.4x | $18 | 🔥 Lapis Ward |
| Titanium | 2x | $15 | — |
| Jade | 1.95x | $15 | — |
| Amethyst | 1.85x | $14 | — |
| Boneite | 2.6x | $20 | 🔥 Marrow Drain |
| Ruinstone | 2.7x | $20 | — |
| Mossy Agate | 1.7x | $13 | — |
| Old Bronze | 1.55x | $12 | — |
Graveiron carries a 2.2x crucible multiplier — B tier, rare rarity — sourced from Forgotten Kingdom. A crucible loaded entirely with Graveiron forges at exactly 2.2x.
Grudge Spikes caps at 30% of the crucible load: ceil(0.3 × N) ores — 15 Graveiron in a 50-ore forge. At 10% it activates at 6%, reaching the full 12% at 30%.
Ruined Statue (Forgotten Kingdom) at 17.4%; Bone Pile (Forgotten Kingdom) at 18.1%.
Graveiron is a solid mid-game ore — respectable 2.2x multiplier plus the Grudge Spikes trait for armor.