Which legendary skins have unique voice lines and unique visual abilities?

Solution 1:

Junkrat:

• His Fool and Jester skins have unique voice lines on kills:
  • "Why so serious?"
• His Junkenstein skin has unique voice lines on casting his Ultimate:
  • (enemy) "Get ready for a shock!"
  • (friendly) "Behold my latest creation!"

Torbjorn:

• His Barbarossa and Blackbeard skins have unique voice lines on kills, such as:
  • "Shiver me timbers!" (on enemy kill)
  • "Ahoy there!" (when saying hello)
• His Chopper and Deadlock skins replace his Forge hammer with a Tire Iron.

Tracer:

• Her T.Racer skin has a unique voice line when switching to her and playing as her:
  • "Here comes T. Racer!
• Both T.Racer and Mach T. have the possibility to say a voice line after a kill:
  • "Speed kills!"
• Both Track & Field and Sprinter have the possibility to say a voice line after using rewind:
  • "False start!"

Hanzo:

• His Lone Wolf and Okami skins have both unique abilities animations and voice lines:
  • On his Sonar Arrow he says lines such as:
  • "See through the wolf's eyes"
  • "The wolf marks its prey"
  • On his Dragonstrike he gets a unique animation and a new voice line:
  • The two spiraling dragons are replaced with two spiraling wolves, howling as they fly through the air
  • "The wolf hunts for its prey!"
  • "Ōkami yo waga teki wo kurae!"

Mercy:

• Her Valkyrie and Sigrun skins give her unique voice lines on casting her Ultimate:
  • "Till Valhalla"
• Her Imp and Devil skins give her unique voice lines on casting her Ultimate:
  • "Heroes never die.....for a price."
• Her Witch skin has a unique voice line on casting her Ultimate:
  • "My servants never die!"

Solution 2:

upon respawn with D.va's scavenger or junker skins equipped she sometimes gives the voiceline "You hear me baby? Hold together."