Grand Master cup is some joke. By the first time I could enter it, every stat except Defense was higher than enemy's, and he didn't even had chance to attack.
I RULE, HE DROOLS.
Tiger Claw is OP, at least on Easy. On Chapter IX, I OHKOed one enemy with perfect hit from it. It was at level 4. And you know, 2 turns is short cooldown.