We have a rule called over exertion. You declare before a combat roll and instead of using a d6, you get to roll a d8. However you then need to recover after over exerting yourself, so for the next 2 rounds all dice rolls are made with a d4, so you have to think carefully before you call as you leave yourself weakened for subsequent rounds. And yes this is all rolls so in the temple you would roll 2 d4. We looked at other scenarios and other dice but found this to be an interesting balance and it doesn't get over abused either.