Thus Spoke Kelemvor

{c} This amulet can only be attuned to by a Cleric of Kelemvor. Whilst attuned to this amulet, it functions as a holy symbol for you. Undead who must save against your Turn Undead feature automatically fail if their CR is equal to or less than half your level. Additionally, once per day you can summon the memory of Ahz'artak to make a Breath Weapon attack originating from you.
"You are the last of us, Agham. For Kelemvor, for justice, for peace, carry on. Until the risen are only a memory."