Reforging

 is a feature introduced in the 1.1 update, and can be used to modify most weapons and accessories. Vanity items, armor, and special tools such as the Grappling Hook are unable to be reforged.

Purchasing a reforge from the Goblin Tinkerer applies better/worse stats (buffs) to the item being reforged, such as improving damage, increasing movement speed, improving the defense bonus for the item, and so on. However, possible modifications include bad ones that will make the item less desirable, such as making a weapon do less damage or have a slower firing speed. Accessories and Weapons have separate lists of possible buffs/debuffs, and different weapon types also have slightly different lists (range weapons can have improved firing speed, while melee weapons can have improved size which increases hit-range, while spells have reduced mana cost). Reforging an item chooses one buff/debuff from its applicable list at random. Multiple reforges on an item do not stack: Reforging an item will overwrite any existing buff on the item. Items can be reforged infinitely with no penalty. Each buff/debuff has a name and color. The best buffs for weapons will apply 5 different buffs (examples below).

Reforging can increase and decrease the tier of the item by up to 2 tiers, raise the sell price by up to 209%, or decrease it by 60%.

Note: Not every item is able to have every kind of prefix. For example, the Magical Harp cannot have the Mythical prefix because the harp itself has no knockback. Mythical boosts knockback so it can't be on the harp. Flails, spears, boomerangs, drills, and chainsaws cannot be reforged for size/knockback, so their best is Godly.

Requirements


In order to reforge items, there are three different things that need to be obtained :
 * Goblin Tinkerer (NPC after a Goblin Army has been defeated)
 * An amount of money, depending on the item's value. (Example: Standard Copper Shortsword = 3.50 silver, Sunfury = 3.70 gold). The cost is three times the sell value of the item.
 * A weapon/accessory to reforge.

The following Headings and dot points show all the known modifications of each of their class, based on a lower leveled item.

Melee Weapons
Flails, spears, boomerangs, drills, and chainsaws cannot be reforged for size/knockback (best is Godly). There is currently a glitch which does not allow you to reforge copper axes above Tier 2 (Green). The other axes (iron, silver, gold, demonite, and the two hamaxes) however can be reforged to be Legendary.

Known Modifications
Some of these values will be lower/higher on different weapons, but the attributes will be roughly the same (the Phaseblade can also be reforged to Legendary):



Positive Attributes
5 Bonus Stats:
 * Legendary (+15% damage, +10% speed, +5% critical strike chance, +10% size, +15% knockback)

3 Bonus Stats:
 * Godly (+15% damage, +5% critical strike chance, +15% knockback)
 * Superior (+10% damage, +3% critical strike chance, +10% knockback)
 * Dangerous (+5% damage, +2% critical strike chance, +5% size)
 * Savage (+10% damage, +10% size, +10% knockback)
 * Murderous (+7% damage, +6% speed, +3% critical strike chance)



2 Bonus Stats:
 * Demonic (+15% damage, +5% critical strike chance)
 * Agile (+10% speed, +3% critical strike chance)
 * Deadly (+10% damage, +10% speed)
 * Unpleasant (+5% damage, +15% knockback)
 * Rapid (+15% speed, +10% knockback)

1 Bonus Stat:
 * Sharp (+15% damage)
 * Pointy (+10% damage)
 * Hurtful (+10% damage)
 * Strong (+15% knockback)
 * Forceful (+15% knockback)
 * Quick (+10% speed)
 * Nimble (+5% speed)
 * Zealous (+5% critical strike chance)
 * Keen (+3% critical strike chance)
 * Massive (+18% size)
 * Large (+12% size)

With Positive and Negative Attributes
4 Stats Added:
 * Bulky (+5% damage, -15% speed, +10% size, +10% knockback)
 * Nasty (+5% damage, +1% speed, +2% Critical Strike Chance, -10% knockback)

3 Stats Added:
 * Shameful (-20% damage, +10% size, -20% knockback)

2 Stats Added:
 * Heavy (-8% speed, +15% knockback)
 * Light (+15% speed, -10% knockback)
 * Ruthless (+20% damage, -10% knockback)

Negative Attributes:
3 Stats Added:
 * Terrible (-20% damage, -13% size, -15% knockback)
 * Unhappy (-8% speed, -10% size, -10% knockback)

2 Stats Added:
 * Broken (-40% damage, -20% knockback)
 * Annoying (-20% damage, -15% knockback)


 * Shoddy (-20% damage, -15% knockback)

1 Stat Added:
 * Damaged (-20% damage)
 * Dull (-20% damage)
 * Sluggish (-23% speed)
 * Slow (-15% speed)
 * Lazy (-8% speed)
 * Tiny (-18% size)
 * Small (-10% size)
 * Weak (-20% knockback)

Ranged Weapons


Note: Modifications on ranged weapons are very limited on low-level items. The more powerful modifications are only available on higher tier weapons. Weapons classified as "miscellaneous" (such as Flamethrower, Blowpipe, Handgun, etc.) receive 5 stats when receiving the Deadly prefix.

Known Modifications
Some of these values will be lower/higher on different weapons, but the attributes will be roughly the same (default values in header).

Positive Attributes
5 Bonus Stats:
 * Unreal (+13-17% Damage, +10-14% Speed, +5% Critical Strike Chance, +10% Velocity, +15% Knockback)

3 Bonus Stats:
 * Godly (+13-17% Damage, +5% Critical Strike Chance, +15% Knockback)
 * Superior (+9-11% Damage, +3% Critical Strike Chance, +10% Knockback)
 * Murderous (+6-9% Damage, +4-9% speed, +3% Critical Strike Chance, stats from Mythril Repeater and Phoenix Blaster)

2 Bonus Stats:
 * Demonic (+16-17% Damage, +5% Critical Strike Chance, stats from Clockwork Assault Rifle )
 * Sighted (+17% Damage, +3% Critical Strike Chance)
 * Rapid (+13% Speed, +10% Velocity)
 * Hasty (+10% Speed, +15% Velocity)
 * Agile (+10% Speed, +3% Critical Strike Chance)
 * Deadly (+10% Damage, +10% Speed)
 * Staunch (+9% Damage, +15% Knockback)
 * Unpleasant (+4% Damage, +15% Knockback)
 * Intimidating (+5% Velocity, +15% Knockback)

1 Bonus Stat:
 * Hurtful (+15-20% Damage, Copper Bow and above)
 * Zealous (+5% Critical Strike Chance)
 * Keen (+3% Critical Strike Chance)
 * Quick (+10% Speed)
 * Nimble (+10% Speed)

With Positive and Negative Attributes
4 Stats Added:
 * Nasty (+4% Damage, +14% Speed, +2% Critical Strike Chance, -10% Knockback, stats from Megashark )

3 Stats Added:
 * Powerful (+25% Damage, -10% Speed, +1% Critical Strike Chance)

2 Stats Added:
 * Ruthless (+19% damage, -10% knockback)
 * Frenzying (-16% Damage, +13% Speed)

Negative Attributes
2 Stats Added:
 * Annoying (-25% Damage, -13% Speed)
 * Lethargic (-13% Speed, -10% Velocity)

1 Stats Added:
 * Damaged (-25% Damage)
 * Sluggish (-20% Speed)
 * Slow (-13% Speed)
 * Lazy (-7% Speed)

Magical Weapons
The Crimson Rod, Nimbus Rod, and Magical Harp cannot be reforged for increased knockback because they have no knockback to begin with.

Some weapons in the Positive Attributes will have negative percentages (e.g. "-17%") for mana cost. This is because lower mana cost is a benefit.

Positive Attributes
5 Bonus Stats:
 * Mythical (+14-18% Damage, +11-14% Speed, +5% Critical Strike Chance, -7-20% Mana Cost, +15% Knockback)

3 Bonus Stats:
 * Godly (+12-14% Damage, +5% Critical Strike Chance, +15% Knockback)
 * Superior (+12% Damage, +3% Critical Strike Chance, +10% Knockback)
 * Masterful (+12-16% Damage, -7-20% Mana Cost, +5% Knockback)
 * Murderous (+12% Damage, +7% Speed, +3% Critical Strike Chance)

2 Bonus Stats:
 * Demonic (+12% Damage, +5% Critical Strike Chance)
 * Deadly (+12% Damage, +10% Speed)
 * Agile (+10% Speed, +3% Critical Strike Chance)
 * Mystic (+10-12% Damage, -20-25% Mana Cost)

1 Bonus Stat:
 * Hurtful (+12% Damage)
 * Quick (+10% Speed)
 * Nimble (+6% Speed)
 * Zealous (+5% Critical Strike Chance)
 * Keen (+3% Critical Strike Chance)
 * Strong (+15% Knockback)
 * Forceful (+15% Knockback)
 * Adept (-14-25% Mana Cost)

With Positive and Negative Attributes
4 Stats Added:
 * Celestial (+12% Damage, -10% Speed, -8% Mana Cost, +10% Knockback)

3 Stats Added:
 * Furious (+12% Damage, +17% Mana Cost, +15% Knockback)
 * Manic (-12% Damage, +10% Speed, -8% Mana Cost)
 * Taboo (+12% Speed, +8% Mana Cost, +10% Knockback)

2 Stats Added:
 * Intense (+12% Damage, +17% Mana Cost)
 * Ruthless (+12% Damage, -10% Knockback)

Negative Attributes
2 Stats Added:
 * Annoying (-25% Damage, -13% Speed)
 * Broken (-25% Damage, -20% Knockback)
 * Ignorant (-12% Damage, +17% Mana Cost)
 * Shoddy (-12% Damage, -15% Knockback)
 * Deranged (-12% Damage, -10% Knockback)

1 Stat Added:
 * Damaged (-12% Damage)
 * Slow (-13% Speed)
 * Lazy (-7% Speed)
 * Weak (-20% Knockback)
 * Inept (+8% Mana Cost)
 * Sluggish (-23% speed )

Accessories
Each accessory can have the values 1 to 4, either as a flat amount or as a percentage.

Mana Stat
 * Arcane ( +20 Mana )

Bugs

 * Some modifiers, such as Lucky, have double percentages (e.g. +% %3 melee damage).


 * Occasionally in the console version, reforging an item many times quickly will give the player a modifier with false stats (e.g. 'Godly'( +60% damage, +25% knockback ) ). These supposed stat increases do not actually increase the attributes of your weapons/tools in this way, which can often times trick players into keeping modifiers they do not desire. Exiting and returning to you world will undo these false attributes; they will revert back to their original programming (e.g. 'Godly' (+15% damage, +5% critical strike chance, +15% knockback) ). This glitch may also occur when continuously dash boarding for the best modifiers.