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Excadrill could work as a heavier Meta Knight semiclone with normal jumps
B: Rapid Spin
Side B: Drill Run
Down B: Dig (this one may be kinda hard to program, but I imagine it being basically MK's Down B, but only on ground)
UpB: Aerial Ace or be original and do a combitantion of Rock Slid + Rock Climb.
Final Smash: Giga Horn Drill