If you picked up the event that gave out Custap Berries and other kinds of rare berries (one of the last events ever released for USUM), and have farmed up a decent supply of them, you could whittle Smeargle down to red health against weak Pokemon, end the battle, and let it hold a Custap Berry outside of battle, then it will fire at the first turn of the next battle Smeargle selects a move in. For the cost of one Custap Berry, you can make it a guarantee instead of having to fish for a lucky Quick Claw. Or, for *two* Custap Berries, you can do the same for the Pokemon that Smeargle is going to sketch from (as long as it's faster than Smeargle) and that will work to sketch even a *non*-priority move (although, if it's a damaging move, you'll have to watch out for Kecleon's Sucker Punch which can snipe them before they get a chance to use the move).