After being hit by this attack, the opposing pokemon will lose 1/8th (by integer division) of its max HP. The using pokemon will then gain HP equivalent to the amount lost by the opponent.
This effect lasts until the afflicted pokemon switches out normally (the effect will be transferred to a pokemon switched in via Baton Pass) or uses Rapid Spin. If the pokemon that used Leech Seed switches out, the pokemon that replaces it will receive the HP gain as if it were the pokemon that had used the move.
Grass-type pokemon are immunne to the effects of this move.
Leech Seed is affected by Brightpowder when the opposing pokémon is equipped with it.
