Cacturne

Few Pokemon are more frustrating to face than Cacturne. As a Swords Dance sweeper with STAB Sucker Punch and base 115 Attack, it would already be sufficiently threatening, but throw in a 20% chance to evade any attack in sandstorm and you have a truly evil cactus. With access to Spikes, Cacturne is also a surprisingly effective team supporter, capable of setting up multiple layers of entry hazards against some of the most common defensive Pokemon in UU. Cacturne does have its flaws, however. Its low base 55 Speed forces it to rely on the fickle Sucker Punch to take on most offensive Pokemon, and its pitiful defensive stats and weaknesses to common types such as Bug, Fighting, and Fire make it easy to KO, provided the attacks connect. Like it or not, Cacturne is a Pokemon that relies on luck to reach its full potential; one roll of the RNG dice can be the difference between a wasted team slot and a devastating sweep.