The Thief Sword (盗賊の剣 Tōzoku no ken) is a special Sword that hails from Fire Emblem: Genealogy of the Holy War and reappears in TearRing Saga: Utna Heroes Saga. As its name suggests, this sword essentially bestows its wielder with the Steal skill, such that, when equipped, allows him/her to purloin gold or items from enemy units that he/she does battle with.
||Ch. 2 - Have Dew speak to Lachesis; Doing so will also yield 50 mutual love points that are bequeathed upon the pair.
The Thief Sword, as it appears in the second series of the TCG.