Mask of Stone

The Mask of Stone provides several bonuses for players looking to train their Slayer skill, listed below. When the double drops, damage, and xp boosts have expired, the mask will become the helmed version (helm of petrification) which has similar benefits, but does not provide double drops, extra damage or an XP boost. After killing 300 cockatrices it changes to the Helm of Petrification.

It has a requirement of level 20 Defence to be worn. It also counts as a mirror shield equipped, granting the use of two-handed or dual wield weapons.