Anvil is crafted from three iron blocks across the top row and four iron ingots in a T-shape below — a hefty thirty-one ingot recipe that cements its place as a midgame milestone. The device opens a two-input interface where the left slot holds the target item, the right slot accepts a sacrifice item or repair material, and the result combines them at an experience cost.

Three primary functions cover most use cases. Repair: combining a damaged tool with raw materials or another copy of itself restores durability without losing enchantments. Combine: merging two enchanted items consolidates their enchantments into the left-hand item, with experience cost scaling by enchantment count and prior-work penalty. Rename: typing in the name field renames the item and changes the colour of its display name to italic white. Critically, the device is one of two gravity-affected tools — it falls when nothing supports it, dealing damage to whatever is below — and it slowly degrades through three damage tiers before finally breaking.