Where the d12 shows up
- Weapons. The greataxe and the lance deal 1d12, the largest single die any weapon uses.
- Hit dice. Barbarians start with 12 hit points plus their Constitution modifier and roll a d12 each level after, or take the fixed 7.
The loneliest die
Players joke that the d12 never gets picked up, and in a party without a barbarian that is close to true. It is also one of the five perfectly regular solids, with every face the same pentagon, which is why it rolls so well when it finally gets its turn.
Averages worth knowing
Taking the fixed hit points each level gives a barbarian 7 per level, half a point above the d12's true average of 6.5. That half point is the rules paying you back for not gambling.