Lumberjack

A lumberjack would target gem holding trees, bushes, logs, and gem boxes on the opponents base. If you are lazy with cleaning up your base then others would have the chance to steal your gems. Lumberjacks would act like goblins in going for those items first. They can be destroyed as any ground units would normally be destroyed. Having the lumberjack would encourage those to acquire more gems giving a third option of acquiring gems other than completing challenges and clearing away your own base of trees, logs, ect.

Gems are a premium currency and cannot be raided. This idea is exploitable and I don't think you understand that obstacles can spawn when you sleep. ALSO SOME PEOPLE LIKE COLLECTION HOLIDAY DECORATIONS AND SOME LIKE HAVING A RING OF TREES ON THE OUTER EDGE.

So that means I can attack a TH3 which still has no resources to remove obstacles and clear his base for like, 50 gems? Or remove someones' prized 2012 X-mas trees? Poorly thought out idea.