Balor's Magical Eye

Balor's Power Eye is one of Merlin's magic item, which is named after the One-Eyed God, Balor, that brought forth calamity and could see through his enemies.

Background
Merlin created the Power Eye with resemblance to Balor's ability of seeing through his enemies. She designs it in the form of an earring intend for Hawk to wear, allowing him to sense the power levels of other characters.

Abilities
When the earring is equipped, the user is detect a target's pure fighting prowess as numerical values. The total power level is a sum of three different values:
 * a measure of magical power.
 * a measure of physical ability.
 * a measure of composure, determination and perseverance.

Recorded Values
The power level values below are in the order of Power-Strength-Spirit.
 * Hawk:
 * Dogget: 290-470-100
 * Meliodas: 400-960-2010
 * Gowther: 1300-500-1300
 * Diane: 900-1870-480
 * Merlin: 3540-70-1100
 * Hauser:
 * Griamor:
 * Gilthunder: