Smash Ball

The Smash Ball is an item shown to debut in Super Smash Bros. Brawl. It allows the user to activate an especially powerful Final Smash attack.

The Smash Ball moves around on its own, making it harder for players to use; it must be attacked by the players until it breaks, and whoever breaks it will be able to use their Final Smash. This should not be confused with a normal item as it grants the user a special attack; nevertheless, it can be turned off in the Item Switch option for those who wish to battle without the potential imbalance that comes from such powerful attacks.

Use
To use the Smash Ball, the characters must attack the Smash Ball until it breaks. A "fresh" Smash Ball can take around 30% damage before breaking, while a Smash Ball that's been on screen a while is easier to break.

The screen darkens, and the player whose attack broke the Smash Ball goes into "standby mode," in which the character's eyes turn yellow and body begins to glow a rainbow color. The Final Smash can then be unleashed at any time by pressing the Standard Special Move button. After using a Final Smash, the character is no longer in standby mode and must break another Smash Ball before using it again.

If a character takes enough damage while in standby mode, there is a chance that they may lose the Smash Ball, which then begins to move about the screen again. Any projectile, including Poké Balls or Assist Trophies, can aid in collecting it.

Trophy Description
''This item can truly turn the tide of battle. Once broken open, a character's Final Smash will be unlocked. If your opponent collects this, you'd better brace yourself for a powerful special move. This item is pretty durable and floats around the stage, so timing and positioning are key.''

Trivia

 * Credit to Smashpedia.