well ive been fooling around a little and i discovered 2 things of importance. first if u do an incomplete Nair or an incomplete bair into anything, mainly i use the hammer cuz u never know. second when u do upb and immediatley press any attack and u will come falling down at the same speed as you went up that means up and down hammer really fast repeatingly. it just wont hit grounded characters. You can use this as a means to return to the stage when someone is edgegaurding. just hang on the ledge down>upb>hammer as fast as possible. you can also uthrow>upb>then hammer. Not that this doesnt work against every character. sorry meta knight haters. mainly only works at 0 and 20% and will not work if they DI.