The Frostclaw Heart is a rare, glowing core harvested from the robotic Frostclaw creatures, resembling a pulsating, icy-blue organ with intricate mechanical details. Its surface is smooth yet lined with faint, luminescent circuits that emit a soft, cold light, suggesting its origin from a highly advanced machine. The heart is encased in a transparent, frost-covered shell that occasionally crackles with energy, hinting at its volatile nature and the power it contains.