Category:Moves that cost HP to use

These moves require their user to sacrifice a portion of their maximum HP in order to use them. Depending on the move, it may fail without deducting HP or succeed but KO the user if they do not have enough HP remaining to use it. Moves in this category are similar to but should not be confused with, which deal damage to their user as a side-effect of their successful use, or , which outright render their user unconscious in order to be used.