Thank you all: D
Toxicroak has not been a problem. Many see Politoed, Tentacruel, Ferrothorn ... Rain Stall Team OBV!
Start with U-turn Scizor exchange Politoed for example, and what he wants to do Defensive Politoed? Toxic and change Toxicroak (Poison or other). Hydro Pump 1OHKO Toxicroak xD...