Totally agree with the power creep! This is so typical of new devs. Like the 3rd or 4th iteration of set design is typically hugely overpowered. Even Hibernium had power creep back in the day. Well, enjoy the card before the nerf-hammer. I’m definitely going to be careful about buying anything for real money.
When an effect causes gems to convert to a walker’s colors and the player is using a colorless walker the game will convert the gems to a random color. The card will be best used with a mono color walker for consistency.