superhuman hearing, vocal chords can project sonic energy as concussive force or energy lances, to shatter or disintegrate matter, create sonar pulses, or to cause unconsciousness, trances, or disorientation in others, flight, Celestial Gatherer armor makes him virtually invulnerable
Banshee's throat was cut in Uncanny X-Men (1st series) #405 by Mystique, leaving him powerless and recovering ever since. His real name was revealed in X-Men (1st series) #96.
Banshee died in X-Men: Deadly Genesis #2 when Vulcan crashed a Blackbird into him. He was restored by the Apocalypse Twins in Uncanny Avengers #9 using the Lifeseeds and Deathseeds they culled from the Celestials.