Cube World Wiki, cataloging the cubes.
Spirit is represented by a selection of colored cubes which are used with a Customization Bench to give extra powers to Weapons. Spirit is activated when any yellow damage (typically from special attacks) is delivered to an enemy, although the 'on hit' particle effect that it creates will be caused by any damage.
The effectiveness of Spirit Cubes seem to be increased by two things:
The amount of damage you deal
How high your combo is
You won't receive much of a bonus if your combo number color is white, whereas a combo color of light blue will yield a higher bonus.
The brighter the Spirit Cubes glow on your
Weapon the more effective they are.
Wind and Ice Spirits seem to always slow and speed up by the same amount.
Your combo/damage seems to only alter the duration of the Spirit effect, not the speed.
In addition to these effects your character will glow slightly for a short time afterward (around 5 to 10 seconds). The brightness of the glow increases depending on your combo and the number of special attacks performed.
To add a Spirit Cube to a
Weapon the Spirit Cube level needs to be equal to, or no more than 10 levels lower than, the Power level of the Weapon. For example, a Weapon of Power level 20 can be upgraded with a level 10 Spirit Cube, but a Spirit Cube of level 9 or lower would not be compatible.
Customization Bench to add Spirit Cubes to your Weapons.
You can also customize
Armor in this way, though doing so won't change its stats, and serves only to alter the Armor's appearance.
There is a bug where Spirits +76 can be placed infinite times upon
Armor and Weapons.
Types of Spirit Cubes
Causes additional damage to enemies.
Drop from rare mobs or
Fire Spirits increase the damage of your yellow attacks by a small amount.
Slows the enemy's attack and movement speed.
Obtained by killing rare mobs with purple names, or
Ice Spirits slow the movement of enemies, and turns them blue.
Absorbs health from enemies.
Unholy Spirits grant you health if you build up a good combo.
Increases your attack and movement speed.
Obtained by killing rare mobs with purple names, or
Wind spirits increase your movement speed to almost double.
Bosses and rarely by common creatures. View the table above for specific details.
Glow effect from Fire Spirit at 200 combo with 5 Special Attacks.
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