Spiked Pit Trap

Dice are identified by the number of faces each one has. For example, a d20 is a twenty-sided die.

An ability that tells you to roll a die will also specify what to do with the result of that roll. Most often, this is in the form of a "results table" in the card text.

Some abilities, like that of Pixie Guide and Barbarian Class, replace rolling a die with rolling extra dice and ignoring the lowest roll. The ignored rolls are not considered for the effect that instructed you to roll a die, and do not cause abilities to trigger. For all intents and purposes, once you determine which dice count, any extra dice were never rolled.