# Magic Crystal of Infinity - Back Attack

**Item ID**: 15129
**Type**: Tool
**Grade**: Gold
**Weight**: 0.1 LT
**NPC Buy**: 50,000 silver
**NPC Sell**: 5,800 silver
**Marketable**: yes
**Notable**: yes

## Flavor

A Black Stone crystal that can be transfused into a crystal socket.


## Usage

Transfuse to gain the following effects

Back Attack Extra Damage +10%



## Notes

※ Transfused crystals have a chance of shattering upon death.
※ This crystal has a high chance of shattering upon death.
※ Right-Click


## Obtain

Defeat monsters in certain zones


## From the Knowledge Book

**Magic Crystal of Infinity - Back Attack**

Magic Crystal of Infinity - Back Attack can be infused into sub-weapons to increase Back Attack damage.

See [Magic Crystal of Infinity - Back Attack](/knowledge/7128.md) for the full entry.

## Used In


- [Magical Shard](/item/4918.md)


## Buff Effect

Using this item applies:

- [Magic Crystal of Infinity - Back Attack](/skill/55031.md)

## Other Entries Sharing This Name

- [Magic Crystal of Infinity - Back Attack](/item/768762.md)