Kake Kake no Mi

Introduction
The Kake Kake no Mi is a paramecia type devil fruit that turns the user into a "slot machine person". This allows them to augment their abilities by matching up the three turning drums built into their body. It was eaten by One-Arm.

Usage
In order to use the fruit, the user must first set the symbols on their reels, which can be done at any time they are not spinning. Each symbol represents an ability of the users. The user has complete control over what symbols appear, as well as the number of symbols on each reel. However, the value of the prize depends on the number of symbols. At any time, the user may start the reels spinning, which readies the power. The overall effect is determined by where the reels stop. While the user can apparently simply will the reals to halt, this is more usually achieved by physically striking them. If all three wheels share the same symbol, the ability they represent is enhanced for as long as the reels remain stopped. Usually, the enhancement involves an attribute being multiplied by the number of symbols on the reels. Therefore, the more symbols the user has set, the less likely they are to get a prize, but also the more potent the prize will be. if there is only one symbol on the reels, the multiplier is of course a guaranteed X1, which has no effect whatsoever.

Weaknesses
The principle weakness of the Kake Kake no Mi is it's unpredictability. The user's only control over how the reels stop is through attempting to time their spinning and track the symbols, which is both difficult and unreliable. Furthermore, it is possible for opponents to stop the reels themselves by striking them, intefering with the use of the fruit once it is revealed. It is apparently also possible to knock the reels out of alignment with a sufficiently heavy strike, cancelling their bonus, but this is not always possible.

user suffers from standard Devil Fruit weaknesses.