This spell is applicable to all weapons shared by pumpkin bombs:

- Rocket Launchers (excluding the Rocket Jumper)
- Stickybomb Launchers (excluding the Sticky Jumper)
- Grenade Launchers
- Wrenches / Sentry Rockets
- The caber too, I guess

The duration and overall visibility of this spell is about on par with pumpkin bombs. I've also made sure that the visual effects for critical rockets, grenades, and stickies remain easily readable when this spell is applied.