Items can be forged into passive & legendary slots. The strength of the bonus depends on the class of the item and can be seen when you right-click the item. To get a good overview of all item classes see the following list Items by category & class.
Once you unlock the slot it will automatically add the related bonus, except for armor, legs & boots which require you to visit the anvil. You can also use this Anvil to remove a gem. Note that you do not actually need a physical gem except for the Gifted runner.
Davie will provide you with passive slot tools while Goliath will provide you with legendary slot tools. Both NPC can be found in the Thais talent area (above mana shop).
Elgnek Oakenfury can be found in Hellgate and will offer you a 
burning gem to get the Gifted runner legendary slot.
To get a good overview of all items with resistance see the following list Items by element.
Tools & costs
| Class | Visual | Basic slot tool | Basic slot cost | Success rate (%) | Visual | Legendary slot tool | Legendary slot cost | Success rate (%) |
|---|---|---|---|---|---|---|---|---|
| 1 | 
|
Bronze hammer | 1 bronze shard & 2.500 gold | ? | Bronze pliers | 1 bronze shard & 2.500 gold | ? | |
| 2 | 
|
Silver hammer | 1 silver shard & 5.000 gold | ? | Silver pliers | 1 silver shard & 10.000 gold | ? | |
| 3 | 
|
Gold hammer | 1 gold shard & 15.000 gold | ? | Gold pliers | 1 gold shard & 37.500 gold | ? | |
| 4 | 
|
Mythril hammer | 1 mythril shard & 50.000 gold | ? | Mythril pliers | 1 mythril shard & 175.000 gold | ? |
Passive slots
| Slot | Name | Description | P1 | P2 | P3 | P4 |
|---|---|---|---|---|---|---|
| Armor & legs | Protection | Gives your character % protection in an element of your choice | 4%
(3% for death) |
6%
(4% for death) |
9%
(6% for death) |
15%
(10% for death) |
| Helmet | Vitality | Highers your maximum health points by % | 4% | 6% | 9% | 15% |
| Wand | Skill | Highers your magic level | +1 | +2 | +3 | +4 |
| Bow | Skill | Highers your distance level | +1 | +2 | +3 | +4 |
| Crossbow | Weapon Hardening | Adds x amount of damage to your current bolts | +3 | +3 | +3 | +4 |
| 1 Hand | Skill | Highers your sword, club or axe level | +1 | +2 | +3 | +4 |
| 2 Hand | Weapon Hardening | Adds X amount of damage to your current attacks | +3 | +3 | +3 | +4 |
Legendary slots
| Slot | Name | Description | L1 | L2 | L3 | L4 |
|---|---|---|---|---|---|---|
| Armor | Wrath of the Gods | Strikes your target with always 10% chance with X amount of damage | 50 | 100 | 150 | 300 |
| Legs | Repel | 5% chance to reflect incoming damage by a certain % depending on the class | 3% | 6% | 9% | 15% |
| Helmet | Mastermind | Adds % on the amount of critical hit damage, stacks with talent of magic & runes | 1.5% | 2% | 3.1% | 5.5% |
| Quiver | Armor penetration | Has amount x chance to break the armor of a target and cause more damage | 28% | 37% | 56% | 100% |
| Boots | Gifted Runner | Reduces walking on fire field damage by 90%, makes you immune to drunkenness | - | - | - | - |
| Shield/Spellbook | Parry | 5% chance to reduce incoming damage by a certain % depending on the class | 28% | 37% | 56% | 100% |
| Bow | Outburst | Turns an explosive arrow into AoE | - | - | - | - |
| Crossbow | Fatality | Adds % on the amount of critical hit damage, stacks with talents | 1.5% | 2% | 3.1% | 5.5% |
| 1 Hand | Swift attack | Chance to make an extra hit | 1.5% | 2% | 3.1% | 5.5% |
| 2 Hand | Fatality | Adds % on the amount of critical hit damage, stacks with talents | 1.5% | 2% | 3.1% | 5.5% |
| Amulet | Mana leech | Turns x amount of damage into mana and returns it to your current mana | 2% | 3% | 5% | 8% |
| Ring | Life steal | Turns x amount of damage into health and returns it to your current health | 6% | 9% | 15% | 25% |
| Wands | Outburst | Turns a fragment into AoE | - | - | - | - |