Arcana Origin Traits
Choosing Arcana — Mystra’s Seat as your Koinonia Origin gives your character additional abilities on top of their normal Species + Background + Class.
Arcane Education
Bonus: Arcana Proficiency
You gain Proficiency in the Arcana skill.
If you already have Arcana proficiency from another source:
Choose another Intelligence-based skill and gain proficiency in it instead.
This represents the magical education and constant exposure to arcane knowledge common throughout Arcana.
Mystra’s Protection
Bonus: Advantage Against Magic
After every Long Rest, the first time you make a saving throw against a Spell or Magical Effect, you have ADVANTAGE on that saving throw.
Once used, this ability refreshes after your next Long Rest.
Practiced Spellcraft
Bonus: Second Chance on a Spell Attack
Once per Long Rest, when you miss with a Spell Attack Roll, you may add your PROFICIENCY BONUS to the roll after seeing that you missed.
If the new total reaches the target’s Armor Class, the attack becomes a hit.
Cultural Limitation
Growing up in Arcana usually means spending far more time around schools, laboratories, temples, and magical institutions than wilderness survival or intensive physical training.
When an Athletics or Survival check specifically depends upon physical conditioning or wilderness experience your character would not reasonably possess, the DM may rule that your Arcana upbringing alone cannot provide Advantage.
Your class, background, personal history, or later training can override this.
Arcana’s historical reputation for being aloof or socially uncomfortable around non-magical communities is handled through roleplay and circumstances rather than giving Arcana characters a permanent Persuasion penalty.
Quick Origin Summary
ARCANA — MYSTRA’S SEAT
SKILL BONUS
Arcana Proficiency
MAGICAL DEFENSE
Advantage on your first saving throw against a spell or magical effect after each Long Rest
SPELLCASTING ABILITY
Once per Long Rest, add your Proficiency Bonus after missing with a spell attack
CULTURAL WEAKNESS
Less emphasis on Athletics and wilderness Survival
IMPORTANT:
Your other training can overcome your cultural limitations.