The one castle tower that survived mostly intact, a tall imposing dark stone spire with gothic pointed architecture, but covered in visible crack lines that have been sealed and repaired by glowing blue arcane magical energy acting as luminous mortar between the broken stones, blue-white arcane lightning crackling at the sharp peak, two glowing blue runic inscription bands circling the tower at different heights, narrow gothic slit windows emitting cold blue light, translucent floating runic symbols orbiting slowly near the top, iron balcony with arcane instruments, dark ravens on ledges, the tallest structure towering above everything, single isolated building on crumbling dark stone foundation base, isometric three-quarter view, RAID Shadow Legends mobile game art style, dark fantasy semi-ruined castle aesthetic, mix of ancient crumbling stone and makeshift repairs, very dark grim atmosphere, dim moody lighting, stylized detailed digital painting, transparent background, clean sharp edges, no environment, no sky, no ground terrain, no other objects, game asset, concept art quality