Prerequisite: Proficiency in Arcana, History, Nature, or Religion.

You've done some studying outside your discipline, and sometimes you just happen to know some very unusual niche information.

No Action Cost - Self - 1/Short Rest

• When you are about to roll an arcana, history, nature, or religion check, you can instead roll any one of the other skills from that list.

For example, maybe you use an arcana check instead of a history check for information about an undead king because his son was a powerful mage and you read the son's memoirs. Or maybe you just happen to have heard about the undead king from a friend in wizard school.