It will make you die immediately.

The command

Note: Minify the command to avoid issues :)

/give @p potion 1 8204 {
    CustomPotionEffects: [
        {
            Id: 2,
            Amplifier: 50,
            Duration: 1200
        },
        {
            Id: 4,
            Amplifier: 50,
            Duration: 2400
        },
        {
            Id: 7,
            Amplifier: 2,
            Duration: 200
        },
        {
            Id: 9,
            Amplifier: 10,
            Duration: 2400
        },
        {
            Id: 15,
            Amplifier: 20,
            Duration: 2400
        },
        {
            Id: 17,
            Amplifier: 10,
            Duration: 600
        },
        {
            Id: 18,
            Amplifier: 50,
            Duration: 1200
        },
        {
            Id: 19,
            Amplifier: 2,
            Duration: 200
        },
        {
            Id: 20,
            Amplifier: 2,
            Duration: 200
        }
    ],
    display: {
        Name: "&4&lTHE POISON",
        Lore: [
            "&l&o&cLen&6gen&edary",
            "&cIt will make you die immediately."
        ]
    }
}

Created: Sun, 22 Jul 2018 02:22:20, Updated: Sun, 22 Jul 2018 02:22:30, Views: 1