Hory shiet, turns out there's another version of the Godly Beast S4 combiner after all. This time it's a slightly smaller, fully plastic version by Hyper Wiz (they did the smaller budget ones)

Catch-up/TLDR
Godly Beast 神兽金刚 is a cgi cartoon/toyline that started a decade ago with a Daizyujin rip-off >>7249928
They've just started their 4th series and the designs actually look interesting this time.