It increases each status but...
Curse Ring is an accessory, providing Strength +35, Dexterity +15, Vitality +15, Spirit +15, Luck +10, and Magic +35. However, the character will start battle with Death-sentence.
Obtained[]
Only two Curse Rings exist in the game. The first requires finding it in Mideel before fighting Ultimate Weapon, requiring the player to examine the back door of the Weapon Shop, then go outside the Accessory shop and walk on the wooden path around the shop until hearing a creaking noise. Checking around here, the player can obtain the "Beat-Up Useless Old Key", then use the key on the back door of the Weapon Shop and choose the option "Tell them the truth!". The second Curse Ring must be stolen during the fight with Ultimate Weapon at Mideel, requiring the player to steal it before it takes three turns.
Curse Ring is missable if the player does not get it in either of these instances.
Use[]
The Curse Ring is a very powerful accessory, but without proper protection, the character wearing it will die from Death-sentence. This can be mitigated by means of preventing Instant Death, such as Death Force or equipping Odin or Destruct with Added Effect in the character's armor. The player can also simply finish battles before the countdown expires, which should not be a problem for random encounters. Being revived after being KO'd from Death-sentence does not re-start the countdown, and so Curse Ring can be used for longer battles too without protection as long as the player is prepared to revive.
The Curse Ring is exceptionally powerful when equipped to Tifa when equipped with the Powersoul, as it will quadruple the amount of damage she does with physicals. With this combined with Tifa being in Near-death, which doubles the damage further, all of her physicals become exceptionally powerful. Utilizing materia such as Deathblow with Added Cut or Cover with Counter Attack or Counter will greatly increase her damage output further. Alternatively, with the Master Fist equipped, it instead increases the damage dealt by x3, and stacks with other bonuses.
To further make usage of the Curse Ring's offensive stat boosts, the player may opt to use the Ziedrich for +20 more Strength and Magic. The Gigas Armlet, Warrior Bangle, Wizard Bracelet, and Fourth Bracelet are all viable options for stat boosts.