This is a feat that your DM may allow you to take after you have worked for it through roleplaying efforts, usually by being trained by someone already proficient in the skill over a period of time in game. This feat will award you proficiency in that skill, and the effort to attain this skill should be noted in your backstory. To qualify for this feat, you must have attained at least 4 levels in one or more classes. You must also have spent time in game, or during "downtime," under the tutelage of someone proficient with these tools.
You have spent time studying under the tutelage of a user of arcane magics. You haven't had the opportunity to learn the intricacies of how the magics work, but you have learned enough to determine types of magic and which schools a spell or arcane enchanted item might fall under. You gain proficiency in arcana ability checks.
Comments