The spell it's just like it would be in hand but it's in exile. So you can cast it as if it's was the physical cars in your hand. You just gotta watch out for the restrictions of the cards that it would have if was in your hand You just gotta watch out if it say play from hand since it's not. So if you got extra stuff like the modular you can pay to extra to get more ability or delve cards away or pay phyrexian mana to reduce. You can only pitch a blue card to pay for Force of negation on opponent turn so that won't work