Quoted By:
This gen brought back gems with a twist, so next gen is going to bring the most unused gimmick ever created
Improved WONDER LAUNCHER
Using some sort of mystical power (Like fusion/stances/machinery/etc) your trainer can buff/recover/revive any pokemon of your team after a certain amount of turns, unlike the WL this doesn't take a turn and can only be used a certain number of times per battle (the more useful powers take more time to charge)