Create a gigantic futuristic energy...

Create a gigantic futuristic energy cannon built at colossal Minecraft scale. The cannon should be long, heavy, and mechanical, with a massive barrel, layered armored plating, glowing reactor sections, exposed machinery, and sharp sci-fi detailing. Angle the entire weapon steeply downward as it fires directly into the ground. A huge concentrated energy beam should blast from the barrel into the earth, bright enough to dominate the build, with electrical arcs and glowing energy surrounding it. Make the impact point enormous, with cracked ground, molten edges, debris, and energy spreading outward from the beam. The cannon should feel like a planet-destroying superweapon—massive, detailed, and readable from extremely far away.