Din's Fire

Din's Fire is an attack used by Zelda in Super Smash Bros. Melee and Super Smash Bros. Brawl. It is her Smash (side) B move. Once done correctly, she will shoot out a ball of fire from her hands, in a similar fashion to Mario's Fireball move. However, it becomes a guided bomb, and Zelda is able to tilt it up or down to get a better chance at hitting the opponent. The player would have to press and hold up and down for it to move around. Then, the player must press the B Button again when it is close enough to the opponent. The attack is difficult to use, but helpful at long-distance fighting.

In Brawl, the fireball travels much faster than in Melee, detonates much quicker (rather than the slight delay in Melee) and does more damage the further the fireball travels. It cannot be reflected, but still can be absorbed by PSI Magnet and Oil Panic.

Origin
It is based on the Din's Fire spell from The Legend of Zelda: Ocarina of Time. Although, rather than being a small sphere, it is a large explosion of fire radiating outwards from Link, used primarily as an offensive spell, but also used to solve puzzles.