Statius's warhammer

Statius's warhammer is a weapon exclusive to Deadman seasonals, requiring 78 Attack to wield. It is part of Statius's equipment, a set of Ancient Warriors' Equipment, and is dropped by any NPC found in the wilderness as part of a global wilderness loot table, the chance being relative to the combat level of the NPC.

Special attack
The Statius's warhammer special attack, Smash, costs 35% of the wielder's special attack energy. Upon a successful hit it will deal anywhere between 25% and 125% of the wielder's standard max hit, any successful hit will lower the opponents Defence by 30%.

Trivia

 * Ancient Warriors' equipment were originally added in a 2008, a year after the backup of Old School Runescape.
 * Statius's warhammer, along with other Ancient Warriors' equipment was polled a possible drop from revenants, this poll failed.