Kaseki, the mock tree pokemon type: rock/fighting ability: Natural fist (1.5x damage when using a grass type move, takes super effective damage from fire type moves), rock head (hidden ability) in order to look more like a tree, kaseki covers its arms with fallen leaves held together with sticky moss in the shape of fists. Kaseki are known to be aggressive towards anyone who harms their forest.
press space to see shiny form credit to @Redunown for the original Kaseki design (left)