Power Attack

If you miss, roll more dice. In fact, just get a bucket of dice and roll them all at once. Pick out the ones with the best numbers, and proceed with your attack. This method works admirably for defense and trap checks as well. Design a lore friendly “magic bag of dice” for your party leader, and you'll be unfailingly prepared. Serious RPG fans might disapprove. Open source developers, though, embrace this approach. Granted, they've modified it a bit; they make other people roll all the dice. Still, the final step is the same. Keep sifting until you score a critical.