Er... I'm pretty sure Sketch can only be used to draw objects that will perform attacks, not objects that will yield berries, since DL has already said that you can't use those.

Hiphopopotamus, Dig down. Relax beneath the earth and finish by Digging up at Leo.

Fracktail, once Hiphopopotamus has Dug beneath the earth, use Relax + Relax + Explosion.