Curse of Strahd
The Heart of Sorrow
The Heart of Sorrow is a 10-foot-diameter red crystal heart that floats near the top of the tower. The third and final seed-gem was transformed through dark magic into this living construct. The Heart of Sorrow is held aloft by the will of Strahd. If the heart is reduced to 0 hit points, it shatters, and its crystal shards rain down on the tower interior and staircase. The destruction of the Heart of Sorrow causes the tower to shudder, and the interior of the tower becomes dark. The Heart of Sorrow regains all its hit points at dawn if it has at least 1 hit point remaining.