Yeah but like I said before, if you use destiny bond, and say it's your last and their second-to-last, you'd both die, and you'd lose. So actually,you'd probably need something like... I don't know, maybe fighting or electric, anything that could beat something, because if it's shadow ball, even though he get STAB, you wouldn't be able to affect normals.
EDIT: supporting Nooblet, again, think about if it was your last pokemon, you wouldn't be able to switch out so both of you would die, and you or both possibly lose. If you want this kind of thing to work, you better have a really strong team that can survive hits.