Diane

Nanatsu no Taizai · Seven Deadly Sins · Giant, Serpent's Sin of Envy, Member of Seven Deadly Sins

Pre-Training

Superhuman Physical Characteristics
Longevity
Magic
Extrasensory Perception
Large Size (Type 0)
Expert Hammer Wielder
Martial Arts
Earth Manipulation
Sand Manipulation (Can create and control pits of quicksand)
Metal Manipulation (Can turn her body into metal)
Non-Physical Interaction (Space & Soul; Scale of Escanor, who can interact with a portal using bare hands. The sins interacted with Guila’s soul)
Statistics Amplification (By performing Drole's Dance, Diane is able to increase his connection to the earth, while increasing his power level the more he carries it out)
Danmaku with Rush Rock
Attack Reflection (Can redirect magic attacks to the earth)
Limited BFR (Diane can throw opponents many miles away from her current location through her physical strength)
Minor Power Absorption (Gideon as an intermediary absorbed attacks that will be channeled to the Earth). Resistance to Heat Manipulation (Survived the Supreme Deity's lightning)
Electricity Manipulation (Tanked Gilthunder's lightning)
Gravity Manipulation (Withstood Marmas' powers)
Poison Manipulation and Disease Manipulation (Only fairies and Giants are able to adapt to the environment of the fairy world)

Her Heavy Metal form can be melted by high enough temperatures.

Ranked tied for #14 of 97 in Nanatsu no Taizai by strength.