So, I just beat Fossil Fighters Champions.
I hadn't played it in a while and had to relearn how to play
I won by complete luck because my strategy originally relied on the opponents Z. Rex's NOT coming back from the dead a couple turns after they died. Which apparently they do.
They killed my main attacker! Giga Spinax.
However, my Ryden was also a strong attacker, and could attack from long range. I was able to wipe out the boss. However, I still had to deal with the Z Rex's.
They killed my machai, who tbh is the weak link on my team anyway but provides good support and has a nice ability to link attacks.
I was done to one Z. Rex when the other revived again. I killed one of them. I was down to so low LP that 1 hit from even the weakest opponent would kill me. So I just attacked knowing the only way I could win is IF I got a crit
I got that crit!