As someone who has essentially planned out an entire shmup game, I’ve got a few ideas. For now, I’ll outline one from one of my OCs.
Violet Raha: A satori youkai with the ability to manipulate senses and sensory information. Though not as heavily shunned as satori and Koishi, she has a friendship with each and acts as an errands runner for them every now and then. She wears a purple dress and has short bluish hair. She wears a black ribbon in her hair that has an eye on the middle. Her third eye connects and floats around her in one closed circle, unattached to her. She also holds a rapier she uses as a hobby to keep busy. Now with her character set, next is the card idea I had.
As a stage four boss, she will have three cards. I however only have the idea for one currently, relating to her ability. To manipulate sense, she creates a “psychic wind” which then effects the target when hit. Thus, her final card mirrors that ability.
Psychic Wind: Suffocating Darkness - A card where Violet uses her psychic wind to blind the player. This card starts with her firing a undodgeable wave, where it temporarily blinds the player. As their vision comes back, the pattern is set up and fires as soon as the player can see a little. It has two waves of lasers, one on left and one on the right. They shoot diagonally down, crossing over to create the holes the player must stand in. The blindness essentially is there to make the holes harder to find, as you have less time to read the directions of the lasers to find the holes. After wards, a wave of seeking lasers come and fire at the players, converging on their location when they appear. After this wave, it repeats phases. On average, you should have to do the darkness phase twice and seeking lasers once.