Final Fantasy 7 - All Lucky 7's

Side Quest - All Lucky 7's

Any character whose hit points are reduced to 7777 after an attack gets the All Lucky 7’s effect. The character goes into a mad rage and begins attack the enemy non-stop, landing a hit for 7777 points of damage each time.

To get this you must first get your character’s HP over 7777. This means the All Lucky 7’s effect can only happen to high-level characters or those equipped with several “HP Plus” Materia. You’ll also need a lot of luck since someone’s attack must knock that character down to exactly 7777 HP. It can happen, but it’s not likely to happen when you’d like it to. Also, after any battle where a character’s Hit Points are 7777, that character’s HP is reduced to 1. So you can’t carry the All Lucky 7’s effect over to another battle.

NOTE: It may be possible to keep this effect if you can find a way to equip your character with Materia that alters the character’s HP level so that it’s exactly 7777.