Juniper

Was thinking of uses for memento (Maybe there's an obvious use I'm missing) and started thinking "it's only any use if you're about to faint and you want to take down enemy stats, possibly forcing a switch" then I wondered if you used something with high speed in doubles with a focus sash, there would be some risk involved because it could be attacked by both enemies but if it made itself useful with a strong attack, was lowered to 1hp, then used memento on it's al...