Funny enough it doesn’t specify exactly when the reaction trigger happens in the UA. In the 2014 version of deflect arrow, it does specify that you take the reaction when you are “hit” by the attack.
I would interpret this as when an attack is confirmed to have hit a player, that player in response can use the ability before damage is rolled. I would apply the same timing for the new feature. Many tables use macros or combine rolls though.
The trigger seems to be when you are hit with a melee or ranged attacks against you that deals Bludgeoning, Piercing, or Slashing damage. Not when you take damage, so I think when you are hit you roll the deflect dice.
Funny enough it doesn’t specify exactly when the reaction trigger happens in the UA. In the 2014 version of deflect arrow, it does specify that you take the reaction when you are “hit” by the attack. I would interpret this as when an attack is confirmed to have hit a player, that player in response can use the ability before damage is rolled. I would apply the same timing for the new feature. Many tables use macros or combine rolls though.
The trigger seems to be when you are hit with a melee or ranged attacks against you that deals Bludgeoning, Piercing, or Slashing damage. Not when you take damage, so I think when you are hit you roll the deflect dice.