Mad Chess: adding a mermaid, angel & dragon army to Chess

So I am creating this variant called Mad Chess where players can play the same game of Chess they know and love, but this time, with 3 additional factions dropped into the mix. The goal is still to checkmate the enemy king with one of four armies at your disposal, each with their own unique pieces, abilities & flavor.

Four Factions

• Humans: Classic chess army with long-ranged units.
• Mermaids: Cover the edges of the board with water tiles to give special abilities.
• Angels: Unusual movement capabilities & situational invincibility.
• Dragons: Devastating effects upon capture.

https://store.steampowered.com/app/1551190/Mad_Chess/

Let me know if some factions already sound unbalanced to you.

nice

Thank you ChessDude ! Any feedback is appreciated & don't forget to wishlist the game.

Would a wall-bouncing bishop be too strong for a faction ?