Release 35 - d20s that bounce

The cave is dark and dank, with the repetitive drip-drip-drip from a nearby underground stream. You smell sulphur, a sure sign that the dragon is within. The local sage told you it was a baby, easily dealt with for a group of adventurers like you.

The bard rolls a 1 on a stealth check, tumbling to the ground, instruments scattering into the darkness with an obnoxious clatter.

The Dungeon Master grins. From around the DM screen they draw a giant, massive d20 the size of a baseball. Maaaaybe that dragon is not so small after all.