Martial Trainer

You are very good at teaching others how to swing a sword or throw a proper punch. You gain the following benefits:

• Increase your Intelligence score by 1, to a maximum of 20.
• You gain proficiency with one Martial weapon or Simple weapon of your choice.
• When you take the Help action to aid another creature’s attack roll, if that attack roll is made with a weapon you're proficient in, or it's using an unarmed strike, you can make a DC 15 Intelligence check, adding your proficiency bonus to the result. On a success, that creature’s attack roll gains a bonus equal to your proficiency bonus, as you share pertinent advice on how to attack more effectively. To receive this bonus, the creature must be able to understand what you’re saying, and must be able to see you.