This came up on BGG. Interestingly I'm going to have to reverse the way I've played for years I think.
The question was exactly when the OL gains threat for surges, effectively important only as to whether the OL can spend that gained threat for additional dice added to teh same attack (during AC outdoor encounters).
The OL does in fact gain threat for surges at the same time as heroes would be spending theirs, not at the end of the attack as I had thought (and I think previously has been the general agreement here).
Its on pg 10 DJitD rulebook, under Step 5: Power Enhancements, Power
Surges, and Fatigue of the combat sequence.
During that part of the sequence hero players may spend surges or power enhancements to boost the results of their attack.
And
the OL may spend surges for threat.
And
the heroes may add extra dice using fatigue (as a fourth subheading at the same level but immediately after the using surges subheadings).
Since the AC rules for using threat to add or upgrade a die specifically say "like a hero using fatigue on an attack", it therefore follows that the timing options are the same as for a hero.
So, clearly, dice can be added or upgraded both before the roll and also after the roll during step 5 (though a rolled dice can't be upgraded).
And since dice can be added after the surges are spent for threat, therefore the newly purchased threat can be used to buy more dice and add them to the roll.
Which we've always ruled out!
DJitD pg10
Step 5: Power Enhancements, Power Surges, and Fatigue
If the attacker has not rolled a miss result, it is possible for the attacker to modify the rolled range and damage through one or more of the methods described below.
- Using Power Enhancements (Heroes or Overlord):
The black power dice have power enhancements on several of their sides. For every power enhancement a player rolls during an attack, he may increase either the range or the damage of the attack by 1.
- Using Power Surges (Heroes):
Many of the dice have power surges on them. A hero player may use his rolled power surges to trigger a variety of special effects, depending on the weapon used.
snip...
- Using Power Surges (Overlord):
For every two surges the overlord player rolls during an attack, he gains one threat token. Any unused surges are lost.
- Using Fatigue (Heroes Only):
or using threat in encounters (Overlord)
After the dice have been rolled for an attack, hero players may also spend one or more fatigue tokens to add additional power dice to the roll. However, an attacker may never roll more than five total power dice for a single attack. See “Spending Fatigue for Attacks,” page 18, for further information.
Have I missed something? Probably...