Akina's Heel (Ah-key-na's Heel)

The story of Akina's Heel is a draenean folk tale, referencing the downfall of a seemingly invulnerable dragon, who was felled by defenders of Oxeos. The white dragon was said to have impenetrable scales, though had previously replaced a scale on their heel with a scale forged from metallic silver, a recent addition to their hoard. They had done this through sheer vanity, and a trident was able to pierce it, with the blessing of The Triwyrm. This blow knocked Akina out of the air, and led to their death.   The story is frequently referenced, even outside Draenea, as an allegorical saying meant to represent a single point of weakness in an otherwise insurmountable obstacle or foe.