Female Faceclaims: Shiore and Unnamed Female host
Weapons: Sword of Kusanagi
Ninjutsu:
Attack Prevention Technique
Binding Snake Glare Spell
Body Flame Technique
Body Shedding
Eight Branches Technique
Five Elements Seal
Formation of Ten Thousand Snakes
Gathering of the Snakes
Hidden Shadow Snake Hands
Living Corpse Reincarnation
Many Hidden Shadow Snake Hands
Orochimaru's Juinjutsu
Shadow Clone Technique (Manga only)
Slithering Snake Mode
Soft Physique Modification
Summoning Technique (Snakes)
Summoning: Impure World Reincarnation
Summoning: Rashōmon
Summoning: Triple Rashōmon
Sword of Kusanagi: Longsword of the Sky
Temporary Paralysis Technique
Twin Snakes Mutual Death Technique
Vanishing Facial Copy Technique
Wind Release: Great Breakthrough
With Orochimaru preforming even the lowest class techniques, when it is he who is performing them, their devastating effects and potency increases immensely With effectiveness in Ninjustu, Chakra Control, and Intelligence, He can use each technique to its fullest potential. Orochimaru-because of his great use in chakra control- can absorb chakra within direct contact.
Orochimaru is also skilled in the field of research, being able to analyze an enemy's fighting style and techniques. Because of this, he is also a great teacher, being able to both see and bring out a person's potential in a remarkably short time. (See:Sasuke).
Not much is said on how much he has of this. It can be assumed, however, from Kabuto's reaction to absorbing the portion of chakra inside of Anko's curse mark, that Orochimaru has plenty to spare.
Observe the Headcanons for extended information.
Consult The Narutopedia for additional information and jutsu.