As the party spreads out, you hear a scream from the back of the party. A huge gelatinous mass, so transparent that you can almost see through it to the other side, roughly cubed shaped, has surprised the rear of the party from the eastern passageway. On the front of the cube are two foot-wide black spots, spaced diagonally like the two spots on a dice. From out of those spots come pseudopods that lash at Ori and Dori. Both are seared with damage, and Ori slumps to the floor, paralyzed
The party can now react!
Gelatinous Dice rolls 5, party is surprised
Gelatinous Dice rolls a 2 for number of spots on this face
Gelatinous Cube attacks Ori, rolls 11, hits for <1d6>=1 damage
Ori, save vs Paralyzation, rolls 2 - fail
Gelatinous Cube attacks Dori, rolls 19, hits for <1d6>=2 damage
Dori, save vs Paralyzation, rolls 18 - success