Ninja Man

en 1.8 /summon Villager Shops

This only sells one item...

WAIT! This is a mask seller. He will sell a super mask for (Totally worth it) 15 diamond blocks and 3 nether stars!

The command

Note: Minify the command to avoid issues :)

/summon Villager ~1 ~ ~ {
    Profession: 0,
    CustomName: "Frank",
    CustomNameVisible: 1,
    Career: 1,
    CareerLevel: 42,
    PersistenceRequired: 1,
    Invulnerable: 1,
    Attributes: [
        {
            Name: "generic.knockbackResistance",
            Base: "1f"
        },
        {
            Name: "generic.maxHealth",
            Base: 99999
        }
    ],
    Offers: {
        Recipes: [
            {
                buy: {
                    id: "diamond_block",
                    Count: 15
                },
                buyB: {
                    id: "nether_star",
                    Count: 3
                },
                maxUses: 9999999,
                sell: {
                    id: "leather_helmet",
                    Count: 1,
                    tag: {
                        display: {
                            Name: "Ninja Mask",
                            Lore: [
                                "This will allow you to hide in the dark while being extremely powerful!",
                                "This will also make you super quick!"
                            ],
                            color: 0
                        },
                        AttributeModifiers: [
                            {
                                AttributeName: "generic.maxHealth",
                                Name: "generic.maxHealth",
                                Amount: 100,
                                Operation: 1,
                                UUIDMost: 98776,
                                UUIDLeast: 466143
                            },
                            {
                                AttributeName: "generic.knockbackResistance",
                                Name: "generic.knockbackResistance",
                                Amount: 1,
                                Operation: 0,
                                UUIDMost: 78941,
                                UUIDLeast: 252787
                            },
                            {
                                AttributeName: "generic.movementSpeed",
                                Name: "generic.movementSpeed",
                                Amount: 10,
                                Operation: 0,
                                UUIDMost: 78830,
                                UUIDLeast: 835504
                            },
                            {
                                AttributeName: "generic.attackDamage",
                                Name: "generic.attackDamage",
                                Amount: 99999999,
                                Operation: 2,
                                UUIDMost: 19163,
                                UUIDLeast: 136178
                            }
                        ],
                        ench: [
                            {
                                id: 0,
                                lvl: 30000
                            },
                            {
                                id: 1,
                                lvl: 30000
                            },
                            {
                                id: 3,
                                lvl: 30000
                            },
                            {
                                id: 4,
                                lvl: 30000
                            },
                            {
                                id: 5,
                                lvl: 30000
                            },
                            {
                                id: 6,
                                lvl: 30000
                            },
                            {
                                id: 7,
                                lvl: 30000
                            }
                        ],
                        Unbreakable: 1
                    },
                    MaxUses: 9999999
                },
                rewardExp: false
            }
        ]
    }
}

Created: Tue, 01 Dec 2015 22:30:51, Updated: Mon, 25 Jan 2016 15:15:56, Views: 7