Arkham Horror Blessed Dice Set: - Rules of Play says:
Prepare yourself for a new weapon in the ongoing fight to keep the streets of Arkham safe!
The Arkham Horror "Blessed" Dice Set contains five high-quality, crafted, polyhedral blue dice for use in Arkham Horror. They are cast from hand-carved original sculpts, and feature ornately detailed faces as well as Elder signs on the "4," "5," and "6" sides to indicate successes.