OK, so with this input, I decided to change this to simple additional comments on the Dual Screen set already present.
http://smogon.com/dp/pokemon/jirachi
[SET]
name: Dual Screen
move 1: Reflect
move 2: Light Screen
move 3: U-turn
move 4: Wish
item: Light Clay
nature: Careful
evs: 252 HP / 100 Def / 156 SpD
[SET COMMENTS]
<p>Jirachi is a fantastic user of the dual screen strategy. Bring in Jirachi during the middle of the game on something that it can force out, such as a Choice Band Tyranitar locked into Stone Edge. The process from there, depending on your team, is very linear. It is recommended you Light Screen first, as most Pokémon who threaten Jirachi attack from the special side. Use Reflect next, and U-turn to a Baton Passer such as Celebi or Gliscor, or a set up sweeper such as Dragon Dance Tyranitar. Thanks to Light Clay boosting the length of both Reflect and Light Screen to 8 turns instead of 5, your set up, and your attempted sweep, should be much easier to accomplish.</p>
<p>Jirachi differs from other dual screen users because of Wish and U-turn. When used with no Speed EVs, U-turn becomes a great method of insuring that your chosen target comes into the field taking as little damage as possible. Wish completes the set, as it is a great method for Jirachi to support itself or the team.</p>
<p>The given EVs make Choice Scarf Heatran's Flamethrower a 3HKO after Light Screen is up, and also gives good physical bulk after a Reflect as well. No Speed EVs are recommended on this set to get the maximum benefit out of U-turn, and allow Jirachi to be as bulky as possible. While some may feel that more Speed EVs are necessary, remember that Jirachi will often be one link in a chain, and that it is often better to get your Baton Passer or set up sweeper at full health than to have them take a hit that will reduce their chances at getting off a successful sweep.</p>
<p>This set aims to allow other teammates to set up safely behind dual screens. Two Pokémon who accomplish this task well are Gliscor and Kingdra. The former, having only weaknesses to Water- and Ice-type attacks, can set up both Rock Polish and Swords Dance with little difficulty and Baton Pass them to a recipient such as Metagross. Additionally, Gliscor finds little difficulty switching into Ground-type attacks aimed at Jirachi, and Fire-type attacks will not be doing much damage either with the respective screens in place. Kingdra also benefits from dual screens because it only has a weakness to Dragon-type attacks (of which users will unlikely switch into Kingdra) and has perfectly balanced defenses to easily set up multiple Dragon Dances. Not only that, but Kingdra also has a 4x resistance to Fire-type attacks aimed at Jirachi, and the combination of Water- and Dragon-type attacks goes unresisted in OU except for Empoleon. Really though, any Pokémon with a good set of resistances and defenses can benefit from this set.</p>
[ADDITIONAL COMMENTS]
<p>This set can also function as a lead. While Azelf or Uxie may outclass Jirachi as a screening lead, Jirachi has a few advantages over them. It's bulkier than Azelf, which means it can almost always setup both screens, and can come back midgame to refresh those screens. It also has an attacking move other than U-turn or Explosion, allowing it to hit many pokemon for good damage. It's faster and stronger than Uxie, it's not as predictable, and isn't completely useless when Taunted. Jirachi's Steel typing resists Explosion and Jirachi can also use Wish to heal its teammates. Azelf's higher speed and access to Taunt and Explosion allow it to more reliably setup screens without being Taunted, while Uxie's greater bulk and better typing let it put screens up without being seriously injured in the process, but Jirachi's useful resistances and access to Wish allow it to function as a lead and support your team throughout the match.</p>
http://smogon.com/dp/pokemon/jirachi
[SET]
name: Dual Screen
move 1: Reflect
move 2: Light Screen
move 3: U-turn
move 4: Wish
item: Light Clay
nature: Careful
evs: 252 HP / 100 Def / 156 SpD
[SET COMMENTS]
<p>Jirachi is a fantastic user of the dual screen strategy. Bring in Jirachi during the middle of the game on something that it can force out, such as a Choice Band Tyranitar locked into Stone Edge. The process from there, depending on your team, is very linear. It is recommended you Light Screen first, as most Pokémon who threaten Jirachi attack from the special side. Use Reflect next, and U-turn to a Baton Passer such as Celebi or Gliscor, or a set up sweeper such as Dragon Dance Tyranitar. Thanks to Light Clay boosting the length of both Reflect and Light Screen to 8 turns instead of 5, your set up, and your attempted sweep, should be much easier to accomplish.</p>
<p>Jirachi differs from other dual screen users because of Wish and U-turn. When used with no Speed EVs, U-turn becomes a great method of insuring that your chosen target comes into the field taking as little damage as possible. Wish completes the set, as it is a great method for Jirachi to support itself or the team.</p>
<p>The given EVs make Choice Scarf Heatran's Flamethrower a 3HKO after Light Screen is up, and also gives good physical bulk after a Reflect as well. No Speed EVs are recommended on this set to get the maximum benefit out of U-turn, and allow Jirachi to be as bulky as possible. While some may feel that more Speed EVs are necessary, remember that Jirachi will often be one link in a chain, and that it is often better to get your Baton Passer or set up sweeper at full health than to have them take a hit that will reduce their chances at getting off a successful sweep.</p>
<p>This set aims to allow other teammates to set up safely behind dual screens. Two Pokémon who accomplish this task well are Gliscor and Kingdra. The former, having only weaknesses to Water- and Ice-type attacks, can set up both Rock Polish and Swords Dance with little difficulty and Baton Pass them to a recipient such as Metagross. Additionally, Gliscor finds little difficulty switching into Ground-type attacks aimed at Jirachi, and Fire-type attacks will not be doing much damage either with the respective screens in place. Kingdra also benefits from dual screens because it only has a weakness to Dragon-type attacks (of which users will unlikely switch into Kingdra) and has perfectly balanced defenses to easily set up multiple Dragon Dances. Not only that, but Kingdra also has a 4x resistance to Fire-type attacks aimed at Jirachi, and the combination of Water- and Dragon-type attacks goes unresisted in OU except for Empoleon. Really though, any Pokémon with a good set of resistances and defenses can benefit from this set.</p>
[ADDITIONAL COMMENTS]
<p>This set can also function as a lead. While Azelf or Uxie may outclass Jirachi as a screening lead, Jirachi has a few advantages over them. It's bulkier than Azelf, which means it can almost always setup both screens, and can come back midgame to refresh those screens. It also has an attacking move other than U-turn or Explosion, allowing it to hit many pokemon for good damage. It's faster and stronger than Uxie, it's not as predictable, and isn't completely useless when Taunted. Jirachi's Steel typing resists Explosion and Jirachi can also use Wish to heal its teammates. Azelf's higher speed and access to Taunt and Explosion allow it to more reliably setup screens without being Taunted, while Uxie's greater bulk and better typing let it put screens up without being seriously injured in the process, but Jirachi's useful resistances and access to Wish allow it to function as a lead and support your team throughout the match.</p>