Humberto, the villager.

en 1.12.2 /summon Villager Shops

...

The command

Note: Minify the command to avoid issues :)

/summon Villager ~1 ~ ~ {
    Profession: 3,
    CustomName: "Humberto",
    CustomNameVisible: 0,
    Career: 3,
    CareerLevel: 42,
    CanPickUpLoot: 0,
    PersistenceRequired: 1,
    Invulnerable: 1,
    Offers: {
        Recipes: [
            {
                buy: {
                    id: "coal",
                    Count: 1,
                    Damage: 1
                },
                maxUses: 9999999,
                sell: {
                    id: "coal",
                    Count: 1
                },
                rewardExp: false
            },
            {
                buy: {
                    id: "coal",
                    Count: 4
                },
                maxUses: 9999999,
                sell: {
                    id: "iron_ingot",
                    Count: 1
                },
                rewardExp: false
            },
            {
                buy: {
                    id: "iron_ingot",
                    Count: 10
                },
                maxUses: 9999999,
                sell: {
                    id: "gold_ingot",
                    Count: 2
                },
                rewardExp: false
            },
            {
                buy: {
                    id: "iron_ingot",
                    Count: 5
                },
                maxUses: 9999999,
                sell: {
                    id: "dye",
                    Count: 2,
                    Damage: 4
                },
                rewardExp: false
            },
            {
                buy: {
                    id: "dye",
                    Count: 1,
                    Damage: 4
                },
                maxUses: 9999999,
                sell: {
                    id: "redstone",
                    Count: 1
                },
                rewardExp: false
            },
            {
                buy: {
                    id: "gold_ingot",
                    Count: 10
                },
                maxUses: 9999999,
                sell: {
                    id: "diamond",
                    Count: 2
                },
                rewardExp: false
            },
            {
                buy: {
                    id: "diamond",
                    Count: 1
                },
                maxUses: 9999999,
                sell: {
                    id: "emerald",
                    Count: 1
                },
                rewardExp: false
            }
        ]
    }
}

Created: Thu, 26 Apr 2018 19:34:13, Updated: Thu, 26 Apr 2018 19:34:13, Views: 1