The Unknown

Poison Claw: Sesshomaru's claws release deadly acidic poison which can melt flesh. Sometimes he uses it like InuYasha uses his Sankon Tesso attack, but he can also use it to spray venomous acid from his fingertips.

Whip of Light: Can generate a thin whiplike strand of energy from his fingertips that can slice through almost anything.

Dragon Strike: It is his signature move but it is mainly seen in the movies (three times in the third and twice in the fourth). Its strength is comparable to his brothers Bakuryuuha (Backlash Wave). The Dragon Strike takes on the form of a dragon-like lighting by Sesshomaru waving his sword in the air and from there it takes form. He can also put in the ground which allows him break an enemy's barrier. Unlike the Wind Scar or Backlash Wave, however, this attack is born of Sesshomaru's own power rather than that of a sword, as he is seen using it with both the Tokijin and Tenseiga in the third movie.

Flight:

Super Speed: Ability to move at blinding speed in short bursts, Sesshomaru can move faster than the eye can see, both on land and through the air. When he does this in the anime, he leaves behind a fast-moving blur. He can also instantaneously close long distances without being detected by others.

Super Strength: Sesshomaru possesses physical strength far beyond that of a normal demon or human

Teleportation: Ability to morph into a ball of energy and move over great distances over a short amount of time.

Psionics: Though Sesshomaru's psionic capabilities have never been specifically quantified, he has demonstrated powerful feats of both telepathy and telekinesis

Taiyokai: As the descendant of a great dog demon lord, naturally Sesshomaru is a far superior yokai with heightened senses, intelligence, strength and speed. While he appears to be an elf-eared human bearing splendid clothing and armor most of the time; he can transform into his true form at will, which is that of a gigantic acid-breathing flying canine with fluffy white fur.

Immortality

Regeneration: An ability that allows Sesshomaru to seemly replace limbs lost in battle and recover from similar severe damage.

other: I let my actions do the speaking for me. I have no respect for my brother. Hardly will attack anyone unless I feel it's necessary. I do stuff that only benefit me. Will never turn on anyone.