Hi, I just want to know the exact timing of this card, as it says "after rolling your attack pool...". Does this mean that you have to declare his effect before you can modify any dice? Or is modifying dice part of "rolling your attack pool"?

Rolling your attack pool is rolling your attack pool.

Modifying dice comes after that, so yes, you must decide to use Intel Officer before modifying dice

Makes it a risky use if you blow your initial roll, and you're trying to force pressure on purely on Rerolls.

Thank you for your quick answer!