Horn Leech is a Grass-type move in Generation V. It is considered to be the physical version of Giga Drain. It is Sawsbuck's signature move. It pierces the opponent with its horn and sucks nutrients. It will restore the HP of the attacking Pokémon by half of the damage dealt.
By leveling up
Bold indicates a Pokémon which gets STAB from this move. Italic indicates a Pokémon whose evolution or alternate form gets STAB from this move.