Garnon explained that the source of power in the Hearts were Tiamat's Incarnations, and if the Incarnations fell, the Hearts could be seized. She sent you to kill Petrification Incarnate. You crushed Petrification Incarnate in the Heart of Petrification, and brought Garnon its claw. Garnon and Adella were enthralled by your victory, and assured you that the battle would soon move to Tiamaranta's Eye.