Lethean Draught

Lethean Draught is a liquid featured in [Final Fantasy Tactics A2: Grimoire of the Rift that erases the user's memories with each dose taken. It is made from rabbits and it's created by the Witch of the Fens.

Frimelda and Luc Sardarc Arc

Lethean Draught is first introduced by Ezel Berbier in the mission "I want to forget." After Luso explains his concerns about turning people into zombies, Ezel suggests the use of Lethean Draught instead, apparently arguing that there is no reason for one to die. The player is then left with a choice between killing zombies to obtain zombie powder or Dreamhares to obtain the draught. The mission has no direct effect on the overall storyline (it's more of a test of moral conscience than an actual mission, therefore you always win.) This happens during the Frimelda sidequests.

Duelhorn Arc

Lethean Draught is later introduced on the mission of the same name. The requester, Maquis must defeat Dreamhares in order to make a certain liquid so he can save a woman. Upon completing the mission, Maquis explains that when Duelhorn was defeated and left Jylland, he was taken in and healed by a Viera named Cyda. However, she fell ill to a strange disease that causes her skin to decay- presumably turning her into a zombie. Maquis then struck a deal with the Witch of the Fens: to get a potion to heal Cyda, but at a price: his memories or his life. Maquis chose the former, hence the mission and the need for Lethean Draught. This causes Maquis to slowly lose his memories, as he apparently forgets that only one dose was needed. This later causes minimal problems with a last mission Cyda puts up a post for in the pub: defeating Duke Snakeheart after she notices something is wrong, as Maquis says he must defeat "a snake." By this time, Maquis remembers nothing, or any of the party members: he only remembers Duke Snakeheart was on his employ. It is here where Snakeheart reveals he was the one who poisoned Cyda with zombie powder as well as leaked plans of the Jylland invasion by Duelhorn to the clans. Sometime after Snakeheart's eventual defeat (specifically the mission "A Lasting Peace") Alys the Ensorceled and Night Dancer call Clan Gully to the Aerodrome in Moorabella. Here, the clan meets an "empty" Maquis, who has no memory at all- a consequence of his consuming Lethean Draught. Before they leave, Cyda comes in, and asks Maquis to stay. However, Maquis refuses, saying that he should go with them: a latent remainder of his memory as Maquis the Phantasm. And thus, he leaves with his former team mates to his country.