Devil's fruit

Get ready for a new rare item. It's a consumable, permanent stat change. They are quite rare and should be expensive to trade.

• Devil's fruit of Strength: Permanently increases your STR by one point (CAP: 10 points of STR). 
• Devil's fruit of Vitality: Permanently increases your VIT by one point (CAP: 10 points of VIT).
• Devil's fruit of Dexterity: Permanently increases your DEX by one point (CAP: 10 points of DEX).

And so one with MAG, INT and LUK.

In order of rarity they should be:

LUK<INT, VIT<DEX, STR, MAG.

These stats cap out at 10 and you can't change them with majestic. They are bound to you forever.