Instant Transmission.

Literally right before you claim the hill, I proceed to warp right behind you, do a Brick Break on a pressure point, then fling you back in the exact same direction you sent me as revenge. And in the case you think of some way to get back, I summon that one really annoying tower from phineas and pherb that has a nearly un-breakable shield to surround the hill and protect it, even from teleportation.