Vulnerability

Vulnerability is a spell that temporarily reduces your opponent's Defence level by 10%. It does not stack with curse or itself.

This type of spell is commonly used with a Mud Battlestaff or a Mystic Mud Staff because the staff provides an infinite amount of earth and water runes, thus requiring only one soul rune per cast. This spell can be used by mages to gain experience as an alternative to enfeeble or stun if they don't have level 73 or 80 magic respectively.

Vulnerability costs coins for each cast. Vulnerability costs coins for each cast while having an earth staff equipped. Vulnerability costs coins for each cast while having a water staff or the Tome of frost equipped. Vulnerability costs coins for each cast if you wield a mud staff, or an earth staff with the Tome of frost.