Festival sticks around permanently, however, with the trade-off that your spells damage you when you cast them
Youre looking to combine goblin payoffs with cheap disposable artifacts here, so include all the usual goblin lords and cards like Skullclamp, Prized Statue, and Ichor Wellspring
They also use these beads on themselves when they are captured
Magic has cards valuable enough that one can conceivably rare-draft them even when a major tournament is on the line
You can learn more about everything included in boosters with Product Architect Mike Turian's Collecting Innistrad: Crimson Vow article, and be sure to see all the delightful card frames themselves in Clayton Kroh's Booster Fun article
If you control no creatures other than Joo Dee and no artifacts as the ability resolves, you'll need to sacrifice either Joo Dee or the token copy