I've gotten all the way through the energy hold.. found all the star pieces and got past that, and followed the caterpillar till i got to him, and now we have to battle for the black star or whatever.. and i beat him when he's small and when he's big about 4 or 5 times each.. but then like the 5th time he's big he has a new attack! He throws this big green ball and goes after one bro at a time.. it shrinks you, and you have to press a or b depending on what bro it is to keep it away with your hammer. but everytime i do that it's never enough because in the end he still eats me then spits you back out and all your hp is gone!! it's impossible to avoid! he'll eat mario, then the next turn luigi, so there's no chance to fight! HELP I'VE BATTLED HIM A TON OF TIMES AND CAN'T BEAT IT..