User blog comment:Emptylord/Custom Champion - Ballistic the Living Artillery/@comment-1330314-20150706012138/@comment-1330314-20150706230647

As in, make Ballistic summon Debris from under his feet every time he casts Bootstrap. He'd be standing on a piece of Debris, and would then be able to dash from his perch within a short window of time. This would allow him to generate more Debris, but would also allow him to use his dash to put himself into perfect position to launch the piece of Debris he just created at his target. This is also why I feel Bootstrap with Debris would likely work better with a charge system, as it would offer Ballistic 2-3 small dashes he could individually forfeit for really well-aimed Debris.

Alternatively, you could have Ballistic automatically levitate himself when casting Unearth below himself, and add a completely new E (I feel there could be space for it), though that would obviously lead to a much more loaded kit, which could be a good thing (Ballistic would have lots more things to do, and more Debris interactions) or a bad thing (Ballistic does too much and needs to be mediocre in areas he could otherwise really shine in).