@Wizards_DnD @JeremyECrawford Not sure where to ask this… with regards to playing a campaign in Theros, can you only use the monsters represented in the book or can you use monsters from any source?
— Ash Fourie (@AGFourie) June 22, 2020
When you run an official D&D adventure or use an official setting, you may customize it however you like. At your table, it's your adventure and your world! #DnD https://t.co/wQvQe2OI9l
— Jeremy Crawford (@JeremyECrawford) June 22, 2020