|Release date||20 November 2012 (Update)|
|Drain rate||100 points per minute (1 point per 0.6 seconds)|
|Effect||-3% to -9% enemy damage (PvM)|
-2% to -6% enemy damage (PvP)
Sap Magic Strength is an Ancient Curse unlocked after The Temple at Senntisten. It is used in the same way as normal prayers, although you must pray at the altar beneath the Digsite in order to switch to the Ancient Curses.
When activated, this prayer will lower your opponents' Magic damage dealt by 3%, increasing to 9% over time. This is lessened to 2% to 6% in PvP.