What is your budget? My favorite consistant deck besides volcanion right now is quad lapras which is only about 60-70 dollars to build from nothing and works great so idk. Yveltal has died down a lot with counter being made for it but it is a consistant and good deck just not being played i would recomend playing yveltal with tuaros and wobbufett because soon garb will become a bad option with feild blower. If you really want to play yveltal, but the meta is very open right now until rotation.