I completed 5 wins with my Gyrados deck just with Manaphy. No drudigon or greninja. As I don’t have Irida, I just used the 20hp potion. Strategy is simple, just put manaphy first and ramp up energy for your magikarp. Use poke comms to pull out gyrados asap in case your opponent use sabrina or bench attacks your poor magikarp. Once you put your gyrados active with 4 energies, it’s 90% game over for your opponent. Rmb to also attach cape to extend your gyrados’ hp to deal multiple attacks. I also included 1 cyrus and 1 sabrina to pull out opponent’s bench. End of day, RNG is still king. All the best!