@JeremyECrawford @mikemearls
A wizard takes the Fey Teleportation feat. Any hoops to jump through, or can it add Misty Step to its spellbook?
Same question for a Cleric with Ritual Caster feat. Can it easily add Purify Food and Drink to its ritual book?

— Craig Brown (@CraigBCBrown) December 13, 2018

To copy a spell into your spellbook or ritual book, you need a written version of the spell. You need to see the magical writing and transcribe it.

That said, a DM might allow you to write a spell in your book that you learned some other way. #DnD https://t.co/9tyEHcJ3dJ

— Jeremy Crawford (@JeremyECrawford) December 13, 2018

This needs to be fixed. It’s a horrible system for a Tome Lock. You’re using so many resources to get it in the 1st place. I thought it was such a cool/spicy build. I was wrong it was a trap. With the gold already needed to transcribe it even-kinda ridiculous imo My tweet didn’t pertain to Pact of the Tome.

— Jeremy Crawford (@JeremyECrawford) December 14, 2018

Lock Ritual casting follows the same rules right? The Book of Ancient Secrets does follow the rules in its text, requiring the warlock to transcribe a spell.

— Jeremy Crawford (@JeremyECrawford) December 14, 2018