Jirachi @ Black Sludge  
Ability: Serene Grace  
EVs: 252 Spe  
Jolly Nature  
IVs: 2 HP / 0 Atk / 0 Def / 0 SpA / 0 SpD  
- Steel Beam  
- Substitute  
- Magic Coat  
- Encore / Imprison / Baton Pass

Jirachi

With access to Magic Coat, Encore, and Baton Pass, Jirachi makes an excellent lead for Steel Beam Spam teams, especially against opponents who sacrifice their typical Steel Beam fodder to it. Magic Coat bounces away several methods of disrupting Steel Beam users along with Sticky Web, while Encore eases switches by locking opponents, especially Imprison Steel Beam users, into unwanted moves. Baton Pass allows for slower pivots and Sub passing when Jirachi is discouraged from using Steel Beam. While Jirachi has access to Imprison to hose opposing Steel Beam users, it is slower than the fastest Imprison Steel Beam users, Zacian and Zamazenta, so it often does not play the Imprison Steel Beam role on teams without Sticky Web. Jirachi's biggest drawback is its enormous 100 base Special Attack with STAB on Steel Beam, which means it always OHKOs Naive Accelgor after Black Sludge, among other benchmarks. Perhaps cleanly OHKOing Dugtrio may secretly be useful, though.

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