|Prayer book||Ancient Curses|
|Drain rate||200 points per minute (1 point per 0.3 seconds)|
|Effect||Steals an enemy's Run Energy and restores it to the player. (10% every couple hits)|
Leech Energy, one of the Ancient Curses, steals run energy from a target in chunks of 10% every several hits. This prayer does not work against NPCs and therefore is only useful in PvP situations to prevent a player from running. Its usefulness is limited since players (with a decent agility level) can regenerate run faster than this curse can steal it. Due to its insignificance and high prayer drain rate, Leech Energy is a rarely used.
All Halos reduces the drain rate of this prayer to 2/3 of the normal rate (0.33 times lower).
- According to the ancient hymnal, Leech Energy's verbal incantation is "Reple me nervis hostium." ("Fill me with the vigour of my enemies.")