A breathtaking epic matte painting in the style of Arcane League of Legends by Fortiche Production, dramatic scene of intense arcane construction in a vast frozen wilderness: swarm of intricate clockwork gnome automatons and mechanical dwarf robots actively building a colossal glowing hextech crystalline engine deep in a massive glacial crevasse between towering ice mountains, huge gears being assembled with magical sparks and arcane energy bursts, abundant floating glowing runes in intense blue purple and teal magic, ethereal magical auras and swirling spell effects around the machinery, steam-powered scaffolding and cranes operated by automatons, snowstorm raging with aurora borealis illuminating the night sky, extreme vertical composition emphasizing immense scale height and depth, frost-covered cliffs and intricate ice textures, no humans, cinematic dramatic lighting, vibrant saturated colors, highly detailed masterpiece, 8k