Runway Gen-2 VFX element for compositing
Prompt an isolated VFX element (smoke, sparks, energy) on black for easy compositing.
Prompt
Isolated [EFFECT: e.g. rolling smoke / ember sparks / energy burst] on a pure black background, high contrast, no environment, no subject, centered, looping motion, photorealistic, soft volumetric lighting, slow-motion feel. Use: shoot it on black so you can composite with a Screen/Add blend mode over your footage. Tips: keep the background pure black for clean keying; ask for slow motion for flexibility; generate a few variations and pick the cleanest motion. Pair with a subtle camera-shake in your editor for realism.
- Source
- promptfork seed
- License
- CC-BY-4.0
- Published
- 6/23/2026