Sun:

Cube Throw: Sun will make a big cube (random color) appear, grab it and throw it to the enemies, dealing great damage to all of them.

Encore: Same.

Birthday: Same.

Moon:

Cube Throw: Same.

Jumpscare: Same.

Partypooper: Same as my previous suggestions.

Party Mines: Same.

Eclipse:

Cube Throw: Same.

Fusion Shockwaves: Eclipse will charge it's face, making it glow for some seconds, and then land some powerfull and quick shockwaves from it's face, which goes all the screen. Lands about 5-8 shockwaves and it can land 2 different types: Yellow shockwaves, which heal. Dark blue shockwaves, which damages the enemies (not a lot though).

Birthday: Same.

Eclipse: Same as my previous suggestions.

Jack-o-Moon:

Jack-o-Bomb: Same.

Haunting 2: Same.

Partypooper: Same as my previous suggestions.

Vines Trap: Some vines will come out from the ground and trap a random enemy, they stay for a while and are slowly damaging it while poisoning it. The enemy can't attack while it's trapped.