I've seen phaze play with actually, but did not know that you can footstool out of it and confirm in to upsmash and fair. thanks!I think I found greninja' most useless hitbox. Basically greninja has a hitbox near his head at the very end of Uair, allowing you to hit grounded opponents with essentially a landing Uair, leading to some solid confirms. The hit box however, is slow and tiny. Teeny tiny. You can get things like Fair and Uair kill confirms, footstool locks, Uair spike, etc. have fun. https://drive.google.com/drive/folders/0B8t9dT8LDGegLUVuWWJraDhIRkU?usp=sharing