Arrow of Light

The Arrow of Light, also called the Light Arrow, is the ultimate weapon for Pit, being one of the Three Sacred Treasures. It's an unstoppable beam of light that pierces through everything in its way, enemy or object alike. The downside is that Pit can only launch one arrow at a time; he cannot fire again until the previous arrow has disappeared.

Kid Icarus
These mighty weapons are sealed in a Sacred Casket until Pit assembles all three treasures. In the Palace in the Sky, Pit can blaze his way through Medusa's remaining troops. Their strength is equal to Pit's strength.

Kid Icarus: Of Myths and Monsters
The Light Arrows are functionally identical to their first incarnation.



Kid Icarus: Uprising
The Arrow of Light appears again as identical to its first incarnation but will strike a much different resemblance and also homes in on targets as other bows do in this game and will not pierce through enemies. It, instead has a devastating charge shot,strong melee attacks, and persisting continuous fire that is both incredibly fast, and has incredibly strong homing capabilites as well as a back dash attack that hits the enemy from every direction. It's the only weapon that can defeat an Orne. Unlike other bows, the Melee Dash Attack inflicts all the damage from the attack in one hit rather then splitting it in multiple impacts.

When used in Story Mode, the Arrow of Light gains Pit's current weapon modifiers (Such as overall defense, health etc.) and stars. Only the type and subtype of weapon doesn't matter (First Blade, Viper Blade, EZ Cannon etc) 

Super Smash Bros. Brawl
Pit's Arrow of Light makes a comeback with this long, quick, laser-like projectile, now called Palutena's Arrow. It can be curved in mid-flight to attack mobile foes (though particularly agile ones can avoid easily). The weapon itself, like most projectiles, is not particularly strong; it also lacks in knock-out power. The bolt has lost its ability to pierce targets, in the interest of balance. 

Super Smash Bros Wii U/3DS
Pit is seen carrying the same bow as he did in Brawl, and a screenshot shows him using a move that is most likely the Arrow of Light. <BR><BR><BR><BR><BR>

Trivia

 * Arrows of Light are similar to Light Arrows from The Legend of Zelda.