From the Super Mario Wiki
Nayru's Love is one of the three spells in The Legend of Zelda: Ocarina of Time, appearing as Zelda's neutral special move in the Super Smash Bros. series. Zelda creates a blue crystal barrier around herself that reflects all projectile attacks, while several smaller blue crystals appear it that deal multiple hits to nearby opponents.
In Super Smash Bros. for Nintendo 3DS / Wii U Nayru's Love, like all special moves, is given two custom variants that can be unlocked. The first is Nayru's Rejection, which has a shorter duration and deals less damage but pushes and flips the opponent. The second is Nayru's Passion, which draws in nearby opponents and attacks with an explosion rather than a crystal, meaning that the attack no longer has the reflection property.