I don't know why people don't have spikes in any of the suggested movesets, seeing as it could learn via egg move.
I have tried the following with no success using a Smeargle:
Rapid Spin, Toxic Spikes, Stealth Rock, Drain Punch, Mach Punch, Close Combat, Superpower, Power Whip, Storm Throw, Focus Punch, Sucker Punch, Pursuit, Zen Headbutt, Bullet Punch.
The ones I can confirm are: Spikes, Synthesis, Rollout, and Curse
I'd appreciate if you would try out Leaf Blade, Horn Leech, and Cross Chop. I don't have access to those move for sketching.