Save the Queen

The Save the Queen (セイヴザクイーン) is a staff belonging to Donald Duck that appears in Kingdom Hearts and Kingdom Hearts II. It is the most powerful staff, and requires the most effort to obtain in both games. Unlike other staves, there are different forms of this staff even though it appears in multiple games.

Kingdom Hearts II
The Queen Recipe is found in a chest at the Throne Room. The Save the Queen is a rank S synthesis item, and its upgrade is the Save the Queen+ recipe.
 * 1 Orichalcum
 * 3 Dense Crystal
 * 5 Dense Gem
 * 7 Dense Stone
 * 9 Dense Shard

The Queen Recipe is found in a chest at the Throne Room. The Save the Queen+ is a rank S synthesis item, and is an upgrade of the Save the Queen recipe.
 * 1 Orichalcum
 * 3 Dense Crystal
 * 5 Dense Gem
 * 7 Dense Stone
 * 9 Dense Shard
 * 1 Serenity Crystal

Etymology
The "Save the Queen" is a recurring sword in the Final Fantasy series that is often one of the most powerful Greatswords and Knightswords.