Gray-Dwarven Abilities: Immunities: Unaffected by illusions, immune to all paralyzation attacks, and non-natural poisons. Infravision: 120 feet Detection: Grade or slope in passage - 3 in 4 New construction - 3 in 4 Sliding/Shifting walls - 4 in 6 Stonework traps - 3 in 6 Approximate depth - 3 in 6 Combat: Gains -4 AC vs. ogres, trolls, ogre magi, giants, and titans. Surprise: Surprise others on a 3 in 6 chance Is surprised only 1 time in 10 Daylight Penalties: No enhanced surprise ability -2 dexterity -2 to hit, opponents gain +2 to hit When in darkness but fighting creatures illuminated by light, penalties are: -1 to hit, opponents gain +1, but no other penalties are suffered.