That spelling choice is kinda interesting? What could this theme be?
A TCG introduction video for Phantom Rage has just released which mentions the introduction of a brand new Myutant theme! There will be 14 Myutant cards released at 1 go, allowing you to play the deck right away!
More details for the theme will be released in a collaboration video together with YouTuber Ruggles on 21 October, 8am PT.
Here is the TCG Phantom Rage introduction video if you should be interested.