Heremus

Overview
The Heremus is a level 48 uncommon Rapier dropped by the mini-boss, the Fire Scorpion, of Floor 5, Desolate Dunes. It deals a base damage of 389 and has a critical chance of 7%. Heremus fully upgraded (+10) has a damage of 544.

Since its an uncommon, it most-likely has the drop rate of 1%. Currently the most powerful Rapier as of Version 40.

Trivia

 * In Latin, the word Heremus literally means "waste", "desert" or "wasteland"