Serpent Spine is a Claymore in Genshin Impact that boosts your Crit Rate and your overall Damage against enemies! You can get it as a Battle Pass Reward and its special effect is Wavesplitter:
Every 4s a character is on the field, they will deal 6% more DMG and take 3% more DMG. This effect has a maximum of 5 stacks and will not be reset if the character leaves the field, but will be reduced by 1 stack when the character takes DMG.
Builds that can use this Weapon are: