Re-rolling dice is a specific effect in the game with its own relative power levels. If you can reroll dice you've already rolled every time you forget to roll enough dice, that is like getting a free extra use of divine challenge or akiros favor. It literally does change the statistics involved. There is no way that if wouldn't. Rolling 2 dice and then rolling 3 dice is statistically different from just rolling 3 dice. That's why divine challenge is useful in the first place.
Rerolling dice that would be applied is a special event in Mage Wars. Just rerolling some dice isn't. If my Mage is to attack your Grizzly or whatever, does it change the outcome of my attack if I roll 5 dice before, pick them up and proceed to throw my attack dice? No. It does not.
Does it change the outcome of the attack if I make my attack, roll some dice, am not satisfied and use my akiros favor to roll again? Yes. It does.
The only important thing is that you handle these situations in the same manner every time. If I roll 1 die less 2 times and both times roll my ectra die seperately, that's okay. If I reroll the correct amount of dice every time, that's okay as well. If I add one extra die to one attack and reroll the other, that's not okay.
Different people may choose different approaches, so two players might reroll one attack and add a die to the other attack. But that's fine as well.
[Ninja'd by Enti!]
Well if you don't see anything wrong with someone bringing strategy notes into a high level competitive tournament, nor with no one else being told that this was permitted, even though it's common sense not to do this and even after I explained exactly why it is problematic to do this then I'm not sure how else I can explain it to you.
What unfair advantage do you get from bringing strategy notes? You don't have to remember all these things you wrote down. That's it. Strategy notes in your head aren't unfair.
There is no need to tell anyone that something like this is allowed. Noone told me it is allowed to drink a glass of water during play. I did last time. Am I disqualified now?
I am not (hopefully!). Drinking water does not give me an unfair advantage.
I really don't see anything giving unfair advantages that doesn't violates the rules of Mage Wars.
Carrying more cards in your spellbook than allowed?
Planning 3 spells each round?
Channeling 22 mana every turn?
Summoning a Grizzly as a quick action?
These things are unfair. But these things aren't allowed by the rules.
Drinking water?
Carrying sticky notes to make up for your poor memory?
Being completely naked during play?
These aren't unfair. (Some might be weird.) None of these are forbidden.
Most important thing to remember:
This is for fun.
After completely derailing this, is someone available to record MrBubu and me?