Nayru's Love
Nayru's Love is an attack used by Zelda in Super Smash Bros. Melee and Super Smash Bros. Brawl. Using it makes crystals go all around her body, damaging any player that it touches. To execute, Zelda just must easily press the B button. It usually deals around 2-8 damage. Although not incredibly powerful, the attack is good to use when surrounded. Nayru's Love is also able to deflect projectiles back at the opponent, although it's hard to get the timing correct. Kirby can use the attack when he has copied Zelda's abilities.
Origin
The attack is based on the Nayru's Love spell in The Legend of Zelda: Ocarina of Time. Link would use it to create a large blue crystal around himself that made him invincible to damage, yet still get knocked back from strong attacks. He does not have this attack in any Super Smash Bros. game.