Master Swordsman timing

[Fenriswolf]

If Baron Zemo is defending against a physical attack, does he have to decide to pay the power to use the Master Swordsman:

 

1) after he is targeted but before he rolls his defense dice 

Or

2) after he is targeted and after he rolls his defense dice

I ask because similar wording is on Hulkbuster's Built To Take It superpower: "When this character is targeted by an attack, it may use his power..."

They are both reactive powers but I was not sure when the player gets to choose to use it exactly.

 

 

 

[Negoldar]

Master Swordsman is used during step 2d of the attack timing chart found in Appendix A of the online rulebook.