>>36599635Run it with Golbat/Crobat. They put damage counters for free. Use Dimension Valley to reduce its attack cost.
If you don't like Bats, you could also run Greninja GX, Decidueye GX, or M Alakazam EX which do the same thing but arguably worse. You could also try Tapu Koko, but that uses your attack.
Po Town and Shrine of Punishment are decent techs but it'll be hard to keep up without Valley.
For what it's worth, this is how I built it back when it was brand new three years ago. Lots of new stuff since then that you could use. Really fun casual deck.