Cathan's Seal is a set ring in Diablo II. It is one of the five pieces of the Cathan's Traps item set. Cathan's Seal is potentially the most common set ring to drop. It is a handy item for someone looking to gain life leech, as these rings provide 6% whereas most rings would normally have about double the level requirement. The +10 Strength attribute can also come in handy if the player would like an easy boost to their Strength. Two rings and another piece from this set would provide +20 Strength and a 12% Life leech, all at level 11.