This Physical Choice Scarf set is very useful for standard play. Iron Head's annoying 30% flinch chance becomes 60% with Serene Grace, suddenly turning Jirachi into Flinchkiss with better typing. The scarf allows it to outspeed anything else without a scarf, while Fire Punch allows it to beat Steel types (bar Heatran). U-turn is for scouting for annoying walls and giving you the matchup advantage, while Trick lets you cripple a Pokemon with a Choice item and continue the fight as a normal Jirachi.