Animated Use Motion GIF Effect

Use the provided image as the exact base. Keep the camera static and preserve the hand-drawn MS Paint style. Do not move or redraw the floating rocks. Animate only the central vortex: slowly rotate it clockwise with layered purple energy spiraling inward and a gently pulsing core. Purple streaks drift toward the center. Rocks only slightly hover (1–2 px). Seamless 8–10 second loop. No new objects, no zoom, no camera movement, no composition changes.