In times long past, blue dragons often interacted with the kings and queens of great desert empires. The bloodlines created by such intermingling were treated as a mark of royalty, though such empires have long since vanished. An individual bearing a blue dragon bloodline tends to be territorial and may smell faintly of ozone.
| Character Level | Minor | Intermediate | Major |
|---|---|---|---|
| 1st | — | — | +2 on Deception checks |
| 2nd | — | +2 on Deception checks | Alertness |
| 3rd | — | — | Strength +1 |
| 4th | +2 on Deception checks | Alertness | Resistance to electricity 5 (Ex) |
| 5th | — | — | Blue dragon affinity +2 |
| 6th | — | Strength +1 | +1 to natural armor |
| 7th | — | — | +2 on Insight checks |
| 8th | Alertness | Resistance to electricity 5 (Ex) | Resistance to electricity 10 (Ex) |
| 9th | — | — | Constitution +1 |
| 10th | — | Blue dragon affinity +2 | Create/destroy water 1/day (Sp) |
| 11th | — | — | Blue dragon affinity +4 |
| 12th | Strength +1 | +1 to natural armor | +1 to natural armor |
| 13th | — | — | +2 on Perception checks |
| 14th | — | +2 on Insight checks | Power Attack |
| 15th | — | — | Charisma +1 |
| 16th | Resistance to electricity 5 (Ex) | Resistance to electricity 10 (Ex) | Breath weapon (Ex) |
| 17th | — | — | Blue dragon affinity +6 |
| 18th | — | Constitution +1 | +1 to natural armor |
| 19th | — | — | +2 on Intimidate checks |
| 20th | Blue dragon affinity +2 | Create/destroy water 1/day (Sp) | Immunity to electricity (Ex) |