Arcana measures how much you know about Arcane magic and creatures. Even if you’re untrained, you can Recall Knowledge.

• Recall Knowledge about Arcane theories; magic traditions; creatures of Arcane significance (like dragons and beasts); and the Elemental, Astral, and Shadow Planes.
  

Arcana Trained Actions

• Decipher Writing about Arcane theory.
  
• Identify Magic, particularly Arcane magic.
  
• Learn a Spell from the Arcane tradition.
  

Borrow an Arcane Spell

If you’re an Arcane spellcaster who prepares from a spellbook, you can attempt to prepare a spell from someone else’s spellbook. The GM sets the DC for the check based on the spell’s level and rarity; it’s typically a bit easier than Learning the Spell.

Success You prepare the borrowed spell as part of your normal spell preparation.
Failure You fail to prepare the spell, but the spell slot remains available for you to prepare a different spell. You can’t try to prepare this spell until the next time you prepare Spells.