Good team for Super Double Battle at the Battle tree

Hey guys, I recently just beat Red in Singles and I am currently grinding through Double Battle now. I am now at 34 battles leading with Crobat and Tapu Lele with Tailwind support. The last two are Garchomp and M-Lucario. However last battle was really close one and I really don't want to lose and start all over again. Therefore I want to know what team is (almost) guaranteed to get you through at least 50 battles in Doubles Format.