the better solution might be to add acrobatics + grassy seedRemove Grassy Seed from Rillaboom/Rillaboom-Gmax if Rillaboom is lead. Rationale: No other pokemon that I know have a consumable that is used right when its put on battle. As lead, the chance of enemy having a counter is high and so you'll often be forced back and have a itemless pokemon for the rest of game without the enemy actually having to force it (Knock Off/Trick/Pickpocket/etc).
also flying move because flying move op