Staryu's been released.
Also I was messing around with my Jigglypuff from DW. Serebii also mistranslated its ability lol. It's Friend Guard, not card. (furendo gaado, not kaado)
My level 17 Jigglypuff + my level 15 Tabunne vs level 10 Shimama. Its Quick Attack hit Tabunne for 4 damage while Jigglypuff was in play. I switch out Jigglypuff and it hits me with Quick Attack for 5 damage twice. I would test more, but I gotta go to school haha. From what I can see right now, it doesn't significantly reduce damage dealt to your teammate by the opponent. Or if it does, it's a minimal reduction (but I still think the 5 damage -> 4 is just RNG). When I come back from school, I'll try to hit my teammate with Jigglypuff and see if that's reduced.