From HGWiki
"Thunderborn" (secret Beyond Ultra-Rare subrace)
- requires Half-Elf (changes Appearance - Light Blue Glow)
FC: Druid
- STR +2
- DEX +4
- WIS +4
- Free Feat: Great Dexterity I
- Free Feat: Great Dexterity II
- +25% Electrical Immunity
- Survival Levitation
Book of Races, Thunderborn