Stormonu
NeoGrognard
Thanks for all the replies!
I like it... though a string of bad rolls would still be possible, just cumulatively less likely. In my example, we both rolled under 5 several times in a row (none of those would have hit even with a cumulative bonus).
By the way, it doesn't have to be +1. You could make it you add your current roll to the next roll. So, in the case where you both rolled 5, you'd add +5 to the next roll, and if the next roll had likewise been a 5, you'd be adding +10 to the next roll. If you don't want this to occur every round, you might make a rule it can only be done in desperation (the opponent gets the same bonus to hit you as you swing wilder and wilder each time, leaving yourself open) or perhaps it takes up an action to "ready" the blow (you roll, but don't apply the bonus until the next roll). The latter is really helpful against an opponent you know is difficult to hit.
Tokens and whatnot to allow rerolls are a lot of fun, but if the follow-up roll is just as bad, you're not getting anywhere.