Ray of Judgment

Acquisition
Signet of Capture:
 * The Afflicted Miju (The Undercity)
 * The Afflicted Miju (Vizunah Square (Mission))
 * The Afflicted Cho (Dragon's Throat)
 * The Afflicted Jingme (Unwaking Waters (Mission))

Usage Notes
This is particularly helpful in Alliance Battles where Minion Masters are very common.