The blacksmith upgrades gear to + 12 . Success chances by target level: +1 100%, +2 100%, +3 100%, +4 100%, +5 75%, +6 50%, +7 40%, +8 30%, +9 20%, +10 10%, +11 100%, +12 100% . Gold is item level × 4 × the target level squared (doubled for ancients), and the materials scale with the square too. The blacksmith panel takes a freshly rolled item of your choice and upgrades it at the real odds, showing which stats each level raises. The upgrading guide covers when it is worth it.
Rarity
Slot
Ancient (double gold)
Item level
From
To
+0 to +12, step by step
| Step | Chance | Gold per try | Materials per try | Tries for 90% |
|---|---|---|---|---|
| + 0 → + 1 | 100% | 2,800 |  3 Iron Ore2 Gold Ore1 Earth Essence | 1 |
| + 1 → + 2 | 100% | 11,200 | 12 Iron Ore8 Gold Ore4 Earth Essence | 1 |
| + 2 → + 3 | 100% | 25,200 | 27 Iron Ore18 Gold Ore9 Earth Essence | 1 |
| + 3 → + 4 | 100% | 44,800 | 48 Iron Ore32 Gold Ore16 Earth Essence | 1 |
| + 4 → + 5 | 75% | 70,000 | 75 Iron Ore50 Gold Ore25 Earth Essence | 2 |
| + 5 → + 6 | 50% | 100,800 | 108 Iron Ore72 Gold Ore36 Earth Essence | 4 |
| + 6 → + 7 | 40% | 137,200 | 147 Iron Ore98 Gold Ore49 Earth Essence | 5 |
| + 7 → + 8 | 30% | 179,200 | 192 Iron Ore128 Gold Ore64 Earth Essence | 7 |
| + 8 → + 9 | 20% | 226,800 | 243 Iron Ore162 Gold Ore81 Earth Essence1 Tidewrath Pincer | 11 |
| + 9 → + 10 | 10% | 280,000 | 300 Iron Ore200 Gold Ore100 Earth Essence1 Tidewrath Pincer | 22 |
| + 10 → + 11 | 100% | 2,000,000 |  1 Consecration Stone | 1 |
| + 11 → + 12 | 100% | 4,000,000 | 2 Consecration Stone | 1 |
A failed attempt still spends the gold and materials but never lowers the item's level.
Success: 100%
Next Level (+1):
Recipe
Upgrade
2,800
x 3
x 2
x 1
Expected total
11,253,267
On average, counting the failed tries: each step's cost divided by its success chance.
Stats at +12
Upgrading gear through +10 distributes a 5% bonus based on rolled values across two modifiers at a time in sequence, beginning with implicits; reaching +11 and +12 subsequently grants +5% to all modifiers across the board.
Adding a socket
Each extra socket, up to 3 , costs 280,000 gold and always works: