For every character in the party who hails from Liyue, the character who equips this weapon gains a 7/8/9/10/11% ATK increase and a 3/4/5/6/7% CRIT Rate increase. This effect stacks up to 4 times.
In Game Description
A spear forged from the rocks of the Guyun Stone Forest. It’s hardness knows no equal.
How to get Lithic Spear?
You can get Lithic Spear from it’s exclusive weapon banner