So far the only strategy I came up with for competitive battles was giving either a Quick Claw, Eviolite, or Focus Sash to a Nidorina with Toxic, Crunch, Beat Up, and T-Bolt as sort of a Psychic or Ghost counter. I'm not sure what other strategies to come up with, or if the one I made is entirely useful. Again, any tips on what to use, what the tiers are and what they mean, etc.? Thanks in advance