Vengeance Group

Vengeance Group is a Lunar spell. After Vengeance is cast, up to 75% of the damage next received by the receiving players is dealt back to whatever hit that player, in a similar fashion to a Ring of recoil.

As with all lunar spells, the quest Lunar Diplomacy must be completed to cast this spell. Vengeance spells may only be cast every 30 seconds by the same caster.

Trivia

 * In PvP worlds or for group battles such as the King Black Dragon or Corporeal Beast. This is a very useful spell.
 * Coincidentally Jagex officially released this spell only the thing is, you need to get enough points to get the spell at the Livid Farm, and level 95 is needed to cast the spell.