Grenth's Balance

Description
Elite Spell. If target foe has more health than you, you gain half the difference (up to your maximum health), and that foe loses an equal amount.

Acquisition
Signet of Capture:
 * Facet of Darkness (The Dragon's Lair)
 * Mragga (Frozen Forest only during The Hero's Challenge)
 * The following capture location is no longer available, but could be captured duting Wintersday 2005
 * Grentchus Magnus (Nebo Terrace only during The Greatest Snowman Ever Made)