fantasy projectile boulder 3d model

Create a semi-realistic fantasy projectile boulder for an action RPG. Make the overall shape more rounded and compact: a heavy ball-like stone mass, roughly spherical, but still irregular and natural. It should feel like a brutal magical war-boulder, not a flat rock chunk, not an asteroid shard, not a pile of plates. Keep a strong round silhouette suitable for a projectile, with chunky fractured stone facets, layered surface cracks, and dense weight. Style: - semi-realistic dark fantasy - powerful, heavy, intimidating - not cute, not cartoony, not low-effort Details: - rugged dark stone - subtle ancient rune carvings - faint inner glow in a few surface cracks - cracks must stay surface-level only Requirements: - one closed watertight solid mesh - no holes, no hollow interior, no tunnels - no floating debris, no internal structures - no explosion, no environment, no base - clean game-asset friendly shape - suitable as a UE5 / ARPG projectile asset