Alright Lunchbox, start off by hitting Eddie with Hypnosis while he's using Sunny Day. If we're lucky you can hit him before he can change the weather. Then, if Hypnosis worked, it's snack time! Hit Eddie with Dream Eater twice. If Hypnosis didn't work then Disable his Dig before Eddie can get completely underground. Then while Eddie's tacking a break, hit him the the strongest Focus Punch you can muster.

~Hypnosis~Dream Eater/Disable~Dream Eater/Focus Punch~