Troll Painting is needed to gain access to a cage of a powerful troll which drops the katana Malakar on the third level of the Asylum Dungeon. This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition. It can be looted from a statue in the small room where three statues surround a pool of water on the third level of the Asylum Dungeon.