DJLO
Smash Journeyman
If Luigi does a Green Missile right after jumping, he will gain a good amount of height. This is most effective when used after a Fullhop, but also works for Shorthops and Double Jumps.
This video shows 2 normal jumps and 1 Missile Jump. Note that Luigi can't reach the top platform unless he uses a Missile Jump. Ignore the fireballs, that is just me messing up the Green Missile.
When used from the ledge of Battlefield, it allows him to edge-cancel using the top platform(Not shown because it was hard to record using my phone).
Sorry for the low quality, I only have Smash 4 on 3DS. Is it useful? Maybe for recovery or getting back on stage from the Ledge. This tech reminds me a bit of Rising Aerial and Vududash combined.
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Reposted from reddit. Thoughts?