Parry

[Sniflet]

Hi.
I couldnt find anywhere explanation on how reactions work in FG. For instance if someone attacks a target that has parry reaction option "Parry. Adds 2 to its AC against one melee attack that would hit it. To do so, the PC/NPC must see the attacker and be wielding a melee weapon." Same with shield spell. Because monster/PC already roll an attack and then you should have some kind of option to intervene with reaction action.
Is this possible here?

[LordEntrails]

You can't interrupt the attack, that's why the damage roll is triggered separately. Multiple ways to do this, the two ways we work this at my table is either;
1) roll the attack, announce the parry, have the GM look at the chat result and say hit or miss with the modification.
2) Apply an effect (AC:2) prior to the attack, roll attack as normal and let FG tell you if the attack hit.

Note that the GM also has access to a Reaction checkbox on the CT so he knows who has taken a reaction since their last turn or not. Not sure if the players have access to such.

[damned]

Create a modifier called Parry: -2 when the player invokes Parry hit the modifier and redrag the attack back onto the target and it will recalculate the attack roll with -2 penalty.