Seems rather convoluted if you could roll a 6, then Power Card a 6 for the explosion (or PC 6, then roll a 6), but couldn't Power Card 6 (explodes), Power Card 6. What about PC 6 (explodes), roll a 6, PC 6 for triple explosion?
To me, this example would fall in the category of using 2 power cards for the same battle roll. Therefore it is not allowed.
As far as this is concerned:
If a player substitutes a die roll with a Power card, it can explode following normal rules (see “Exploding Dice” on
page 20). A player can substitute additional die rolls caused by an exploding die with a Power card." (p. 16)
It mostly hinges on how you interpret a roll, whether original roll + explosion rolls are one roll or count as separate:
I completely agree. The difference to me is the difference between "a die roll" and using "a power card". Die rolls are made with die and using power cards is... with a power card. So mechanically speaking, a player is using 2 different items.
i don't think that whether or not rolls count as separate is an issue. When you start your battle or test rolls, you may only use 1 power card per battle or test.
I believe that the die rolls are separate because a lot of wargear/allies allow you to re-roll a die roll. There is no wargear or relic that I know of that allow you to re-roll your "battle value roll". In which case, i would argue that if you could re-roll the "battle value roll" you could re-roll all the dice you rolled for that battle or test.
I have been playing Pathfinder the card game from Paizo recently. There is a lot of debate as to what represent a die roll in this game. Whilst the use of power cards may be convoluted in Relic, I am glad it is no way near as complicated as Patfinder.
In the end a game can be played whichever way players want. I have house rules for this game and I feel that using only 1 power card for a battle or test remains in the spirit of what the game is trying to achieve. Until we get Relic tournament with prize money, I think we can play the power cards however we want (within limits obviously).