As Ivysaur's special move in Brawl
With this move, Ivysaur sends a leaf as a ranged attack, making between 5%-8% of damage. It may curve mildly in a random direction at the end of its reach. It is very useful for canceling others' attacks. This strategy is often used when recovering back on to the stage with Ivysaur, as its Up Special Move is only a tether recovery (see Vine Whip) and a projectile must be used to clear edge-guarders and edge-hogs. Nonetheless, despite the leaf's long range, it will disappear after a short while and has a slight arc, so Ivysaur players must be in a decent position to the opponent before unleashing the move. Razor Leaf can actually be "Smash-thrown", like Samus's missiles, by tapping . This makes the leaf travel a bit faster, and about a character or two character lengths further, but the trajectory cannot be arced as effectively. Due to its high startup lag, low knockback, slow speed, and unpredictable trajectory, it is considered to be one of the worst projectiles in Brawl.
 Brawl manual description
Throw out a leaf like a throwing star. The leaf flies forwards in a straight trajectory.
Razor Leaf is a Special Grass-type attack introduced in Generation I. It is used exclusively by Grass-type Pokémon. It has 55 power and 95 accuracy, but it can hit all opponents in a double battle and has a 12.5% chance of doing a critical hit, which is bigger than most attacks' chance of 6.25%. Also, in Brawl, Ivysaur launches a single leaf, while the animation for the move on Pokémon shows a flurry of leaves hitting the opponent. Also interesting to note is that because of the nuances of the battle system in Generation I, Razor Leaf would critically hit 99.6% of the time for most users, making it one of the more powerful moves back then.
 Use by other Pokémon