LUCAH has 4 "Forms" and you can only have access to 2 of them. LUCAH's 12 skins determine which of these 2 Forms you have access to and which of these 2 you start off with.

Luna: Basic all-round.
Aero: Less damage but more range.
Anima: Higher speed and damage, less power and defense.
Thatanos: Less speed but more power.

Tapping Neutral special changes your form (also has a hitbox.)

LUCAH has 4 different "Familiars" that require meter to use. You gain meter by landing hits. You use the side special to fire the familiar and down special to change the familiar.

Burst (blue): Deals 5% can bounce off of walls and costs 1 meter
Impulse (green): Shoots multiple like a shotgun deals 18% but needs to be close range. costs 2 meter
Rapid (orange): Shoots 6 that hits for 2% each. costs 2
Pierce (purple): Deals 15% and can bounce off of walls passes thru multiple opponents but can only be hit once. costs 3

Familiar do not deal more damage depending on characters form.

https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2397072983
Did you know this was based off of a game?
https://psteamproxy.yuanyoumao.com/app/896460/Lucah_Born_of_a_Dream/

This character is actually pretty easy compared to the other characters made by SAI.
Also special thanks to Nooch for the grammar check.