Hey guys, I found an interesting kill combo last night and I need your approval!
I was playing with this goofy Wario on for glory and started to experiment with Luigi's Nair. I put a little pressure on and he started rolling a lot more, and through a quick read I Nair'd + jump, to pop him upwards while staying with him, and right when my Nair ended, I Double Jumped + Down B'd to carry him slightly higher and throw him off screen! The tricky part is tapping B just a little bit to keep them in your grasp as you're going upwards, tapping B too much will result in the opponent dropping like a rock and your final cyclone hit misses!
I've tested it in practice mode and it does count the entire thing as a 5 hit combo, the thing is, the kill percentages of course can vary depending on the opponent's weight. I find that some lightweights (Luigi, Game and watch, etc.) get knocked out by this at around 80% and higher, since they get carried higher by the cyclone. Mid weights (like Mario and Fox) tend to die at around 100/110% and higher, while the heavier weights (Bowser, Donkey Kong) go about 120%. This is a little trickier to do on fast fallers like Fox, though not impossible, they can slip out of the cyclone if you aren't precise enough with tapping B. I haven't tested this with everyone though.
Anyways, sorry if this was a long post, tell me what you guys think, and let me know if this is even useful! Hopefully it helps Luigi's kill potential in some way!