Human (Yamajin)

Mountain Born. You’re acclimated to high altitude, including elevations above 12,000 feet. You’re also naturally adapted to cold climates.   Feudal Training. You are proficient in martial weapons, light armor, and either medium armor or shields.   Deadly Focus. As an action, you take a knee, being considered prone, and honing in your focus to become much more accurate. At the start of your next turn, you are no longer considered prone, and attacks that you are proficient in double your proficiency bonus for the attack roll, and add your proficiency bonus to the damage roll for 1 minute. This feature requires Concentration to be maintained for its full duration, as if casting a spell. Once you use this feature, you must finish a long rest before you can use it again.

Languages. Common, Yankata, and two extra non-exotic languages.