You can use an action to blow this horn. In response, warrior spirits from the plane of Ysgard appear within 60 feet of you. These spirits use the berserker statistics. They return to Ysgard after 1 hour or when they drop to 0 hit points. Once you use the horn, it can't be used again until 7 days have passed.

The iron horn summons 5d4 + 5 berserker. To use the iron horn, you must be proficient with all martial weapons.

If you blow the horn without meeting its requirement, the summoned berserker attack you. If you meet the requirement, they are friendly to you and your companions and follow your commands.

If you have proficiency with a given musical instrument, you can add your proficiency bonus to any ability checks you make to play music with the instrument. A bard can use a musical instrument as a spellcasting focus. Each type of musical instrument requires a separate proficiency.

You can take a Magic action to blow this horn. In response, warrior spirits from the plane of Ysgard appear in unoccupied spaces within 60 feet of you. Each spirit uses the Berserker stat block and returns to Ysgard after 1 hour or when it drops to 0 Hit Points. The spirits look like living, breathing warriors, and they have Immunity to the Charmed and Frightened conditions. Once you use the horn, it can't be used again until 7 days have passed.

A iron horn summons 5 Berserker. To use the iron horn, you must have Proficiency with all Martial weapons.

If you blow the horn without meeting its requirement, the summoned Berserker attack you. If you meet the requirement, they are Friendly [Attitude] to you and your allies and follow your commands.

If you have proficiency with a tool, add your Proficiency to any ability check you make that uses the tool. If you have proficiency in a skill that's used with that check, you have Advantage on the check too.