Seconded! Been using him to great success lately. I think he should atleast be in B+. Can beat nihilego, tapu koko, heatran and mega-gengar one on one in addition to all that is said. Bulldoze and flame charge are great that way. Stone edge has shaky accuracy but Entie absolutely eats volc and charY. Can take repeated hits and still come out on top. Plus he has sacred fire which makes potential switch ins fearful of burn including but not limited to t-tar, gyarados, landorus-t and hippo. I think it seriously is ahead of each pokemon in B and B- and for that reason B+ is the only fitting answer!