30 Round match - Zero damage dealt

30 rounds. Tied the match. Zero Damage dealt by me.

I played a Aerodactyl / Jigglypuff deck, opponent had a Charizard / Moltres deck.

Every time they had enough energy to attack, I managed to sleep or return their Pokémon back to their deck. I know there is no communication in the game, but I could feel their frustration.