What happens when I attack with The Joker: Oberon Sexton, and I draw Delayed Blast Fireball?
The Joker: Oberon Sexton When The Joker attacks, draw a die. If it is a Basic Action Die, you may use its effect as if you had rolled it (with no bursts) and then add it to your Prep Area. If the drawn die isn't a Basic Action Die, add it to your Used Pile.
Delayed Blast Fireball Continuous: On your opponent's turn, either when an attack is declared or the opponent skips the Attack Step, deal 4 damage to all opposing characters and move this die to the Used Pile.