"Obey Luigi, destroy Mario!"
Not to be confused with Rainbow Cosmic Luigi, New Rainbow Cosmic Luigi is a Stand that was added the 26th of April, 2021. According to the Owner, this Stand will remain obtainable. There are two versions of this Stand. One being the one you see in the image, the other being a currently limited-time Stand. It is unknown if the event for RCL has ended yet. It's the Cosmic Luigi from A Bizarre Day Modded, except it looks a lot different and is missing a lot of the moves.
How to Obtain
Rainbow CL seems to resemble the Cosmic Luigi from A Bizarre Day Modded, only having a few differences. The most notable difference is that Rainbow CL, as the name suggests, will glow different colors. Rainbow CL also has some particles coming out of it, those being Black Stars. It's basically regular Cosmic Luigi but rainbow colored.
E - Cosmical Barrage
Rainbow Cosmic Luigi sends out a flurry of fast and strong punches, doing either 65.9 damage per punch, or 71.9 damage per punch. There is a chance that Rainbow CL will also send out a few kicks at the enemy while holding E, which will do 81.9 damage per kick.
R - Rainbow Overwrite
Rainbow Cosmic Luigi sends out a fast punch that upon hitting your enemy, will do 102.7 damage.
F - Cosmical Vortex
Rainbow Cosmic Luigi will create a vortex that sucks up anyone nearby. This doesn't do too much damage, but is good against runners.
Y - Cosmic Donut
Rainbow Cosmic Luigi will teleport behind the enemy, and will then donut them, dealing 45 damage.
B + Y - Self Heal
Rainbow Cosmic Luigi will heal the user, giving them back around 45 health.
J - Luigi's Finisher
Rainbow Cosmic Luigi will grab the enemy, and will then proceed to beatdown them, dealing 15.6 damage per hit. This will end with a finisher, dealing 100 damage.