I've been looking at an artist named Joan Miro, who was well known for his surrealist paintings with great style. his work helped inspire other artists which lead to the work of the Fauvists.
examples of Joan Miro's work:
With this art style I took inspiration to create my own pieces and see what I could see in the painting to help design my creatures that are fought in the world of the game.
I went into to photoshop to create some other pieces: