Weapon details
Serpent Spine
Type: Claymore
Rarity: ★★★★ Base ATK: 42 CRIT Rate: 6%
A rare weapon whose origin is the ancient ocean. One can hear the sound of the ageless waves as one swings it.
Passive effect
Wavesplitter
R1
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.
R2
Every 4s a character is on the field, they will deal 7% more DMG and take 2.7% 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.
R3
Every 4s a character is on the field, they will deal 8% more DMG and take 2.4% 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.
R4
Every 4s a character is on the field, they will deal 9% more DMG and take 2.2% 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.
R5
Every 4s a character is on the field, they will deal 10% more DMG and take 2% 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.
Cost per phase
Phase 0
Level cap: 20
Adventure rank required: -
Mora: -
Materials
-
Phase 1
Level cap: 40
Adventure rank required: 15
Mora: 5,000
Materials
Whopperflower Nectar x2 
Fragile Bone Shard x3 
Grain of Aerosiderite x3 Phase 2
Level cap: 50
Adventure rank required: 25
Mora: 15,000
Materials
Whopperflower Nectar x8 Fragile Bone Shard x12 
Piece of Aerosiderite x3 Phase 3
Level cap: 60
Adventure rank required: 30
Mora: 20,000
Materials
Shimmering Nectar x6 
Sturdy Bone Shard x6 Piece of Aerosiderite x6 Phase 4
Level cap: 70
Adventure rank required: 35
Mora: 30,000
Materials
Shimmering Nectar x9 Sturdy Bone Shard x12 
Bit of Aerosiderite x3 Phase 5
Level cap: 80
Adventure rank required: 40
Mora: 35,000
Materials
Energy Nectar x6 
Fossilized Bone Shard x9 Bit of Aerosiderite x6 Phase 6
Level cap: 90
Adventure rank required: 50
Mora: 45,000
Materials
Energy Nectar x12 Fossilized Bone Shard x18 
Chunk of Aerosiderite x4