Tyranitar @ Leftovers / Expert Belt
Ability: Sandstream
Evs: 252 Hp / 252 Atk / 4 Def
Nature: Brave
- Screech
- Pursuit
- Focus Punch
- Ice Beam
Tyranitar is a great abuser of Screech to force switches. And he can take advantage of those switches as well. The staple moves of the set are Screech, Pursuit, and Focus Punch. Screech is the staple of the set, and it enables him to force switches effectively. Pursuit and Focus Punch hit everything except Heracross for neutral damage, and Tyranitar has no business with Heracross anyways. Pursuit is great for hitting Pokemon that are eager to flee, as they have no business staying in with -2 Defense on something as fearsome as Tyranitar, and with 120 base power and a massive Attack stat, coupled with the weakened defense of the enemy Pokemon, it can often kill. The other move, Focus Punch, also is great for taking advantage of switches, hitting many things for a 150 power attack with great coverage. The choice between Leftovers and Expert belt really depend on whether you'd rather boost the power of all your moves, especially Ice Beam, which can kill the Gliscor and Garchomp switchins with a little bit of residual damage and Expert Belt, something he cannot do with Leftovers, or whether you'd rather have some form of recovery on this rather bulky Pokemon. Another good thing about expert belt is that Tyranitar can come in on something he threatens and Pursuit early game, feigning a Choice Band set, and then surprising the opponent later on in the game.
But isn't this outclassed? Why not just use Dragon Dance and have a chance to sweep? Well, Dragon Dance Tyranitar does basically the opposite of Screech Tyranitar. Screech forces switches while any opponent who switches a lot against a Dragon Dancer is going to be destroyed. And Screech+Pursuit is really what makes this set different from the dragon dancer, aside from the bulkiness that this guy has. And while Dragon Dance is great for sweeping teams, that's not exactly what this guy is supposed to do. ScreechTar is better for taking out individual pokemon, in a one-at-a-time style rather than a sweep-them-completely style. Because with Pursuit hitting 120 power on a switching Pokemon, most -2 Defense Pokemon are going to die, especially if they are pursuit-weak. The Dancer can be countered and walled and then forced out without doing anything, but it can also sweep. The two serve completely different purposes, and if you're not going to abuse Pursuit with ScreechTar, you may as well use the Dragon Dancer, who, though he can't trap, can do all sorts of other things. Basically, make sure you've got ScreechTar in your team for the right reasons, otherwise he's outclassed.