Curse

Curse
Description:	Curse acts differently depending on whether the user has the Ghost type or not. Ghost-type Pokémon : The user will lose half of its maximum HP (rounded down) and put a curse on the target. If the user has less than half of its maximum HP remaining, the move will execute fully but cause the user to faint. A cursed Pokémon will lose ¼ of its maximum HP at the end of each turn. The curse will remain until the Pokémon switches out or the battle ends. This move is not blocked by Protect, Detect or Spiky Shield, but is blocked by Crafty Shield. Non-Ghost-type Pokémon : The user's Speed stat will drop by one stage and its Attack stat and Defense stat will rise by one stage each. Despite being an effect acting on the user, this move will fail if there are no opponents on the field. The user does not lose HP if Curse misses (due to a move with a semi-invulnerable turn), fails (due to the target already being affected by Curse), or is blocked by Crafty Shield.
Type    Ghost	Category    Status	Base Power    —	Accuracy    100%
Availability Level-up - read the list of compatible Pokémon below.
Pokémon that learn it via level-up: # Pokémon  Level  079         Slowpoke --- 080         Slowbro --- 092         Gastly 12 093         Haunter 12 094         Gengar 12 095         Onix 46 199         Slowking --- 208         Steelix 46 324         Torkoal 12 353         Shuppet 13 354         Banette 1,13 355         Duskull 30 356         Dusclops 30 377         Regirock 17 378         Regice 17 379         Registeel 17 387         Turtwig 17 388         Grotle 17 389         Torterra 17 399         Bidoof 45 400         Bibarel 53 442         Spiritomb --- 477         Dusknoir 30 562         Yamask 29 563         Cofagrigus 29 564         Tirtouga 35 565         Carracosta 35 597         Ferroseed 9 598         Ferrothorn 1,9 607         Litwick 43 608         Lampent 45 616         Shelmet 13 622         Golett 40 623         Golurk 40 Bold indicates the Pokémon gains STAB from the move. --- indicates the Pokémon learns the move instinctively.