I’m starting to believe that Our power is Limitless is either bugged or lacks clarification, last night it took a Crit buff from the opponent just because both of them had a Sp. Def buff, apparently. iirc Xatu took both buffs for himself
My guess is that because opponent got both buffs using only one move (the sync pair in question was Roxie + Scolipede, if you know of any case that can work similarly, give it a try), Xatu copied the move used instead of just the stats themselves.
Edit: I’m really confused by this move. Doing today’s level up supercourse with Xatu, stole a defense buff without having one. Seriously, WTF?
Edit2: they probably fixed the move to what it should have been doing when I first tested this out, which is basically stealing opponents’ buffs to yourself. That is what makes most sense according to the move’s description, rending my first conclusion in the other post useless. Have not tested the other conclusions I had but I can test them again if you guys want me to