why not just use
Aipom from UL? move the energy onto a baby. then next turn, KO the baby.
donphan lists run low energy, and no energy recovery for the most part. so moving it around forces them to use a SSU or seeker in order to attack since they rarely use Energy switch. also, if donphan has no energy, they can't use Machamp's Fighting tag.
it also helps random other matchups. move the rescue energy onto something else that will die very easily, move it onto a different typed pokemon (like moving Magnezone's electric energy onto the ability emboar)
it's just something that's unexpected.