Infuriating Troll
A troll deck specifically designed to drive your opponent nuts with coin flips. It's generally pretty easy to set up, and when set up ideally this deck will be death by a thousand cuts as dual-Hypnos on the bench will have two shots at inflicting Sleep, while Dugtrio has a 50% chance of taking no damage/effects every turn. Note that a Pokemon that's asleep can't switch out, so this can ruin a lot of would-be counter strategies. And if Dugtrio lucks out and scores invulnerability when making a KO, then it will be safe against whatever hits the field next.
While heavily RNG-based, this deck is great for sewing tremendous aggravation, but is also very dangerous as it will likely let the opposition set up fully before it can deal enough damage to get a second point, and will fall apart given one bad RNG roll late-game. It's also weak to Sabrina, as she can force out an invulnerable Dugtrio, and will leave the card dragged out vulnerable to being instantly annihilated if the opponent isn't asleep. Also, beware of Pokemon on the opponent's team that aren't already evolved, as evolving an active Pokemon removes sleep!