Board Thread:Off Topic/@comment-25076409-20140712184109/@comment-74.98.232.48-20140722051840

If I recall correctly, I used six arrows (probably Ebony or Daedric) and a Dragonbone Bow of Chaos, after Dragonrending him to the ground.

Legendary Dragons aren't too threatening when most incoming damage is resisted (either through Armor or Magic Resist) and sneak attacking results in three-shot-kill.