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This Pokemon will move last as long as its opponent chooses moves in the same priority bracket. If two Pokemon that are holding Lagging Tail are out at the same time, the faster Pokemon will move last. If a Pokemon holding Lagging Tail is facing a Pokemon with the ability Stall, the Pokemon with Lagging Tail will move last. If a Pokemon with Stall is holding one of these items, Stall is ignored. Lagging Tail ignores the effects of Trick Room. This item is identical to Full Incense.
Although it may seem useless to make sure your Pokemon always moves after the opponent, Lagging Tail still has its uses. First, it allows users of the move Metal Burst to make sure they move last, since it will fail if the user moves before the opponent. It also helps the users of the move U-turn, who can make sure that the Pokemon they are switching to won't get hit on its way in. Finally, Lagging Tail is an interesting item to Trick for slow Pokemon, such as Bronzong or Metagross, or simply to cripple fast and powerful sweepers.