Suli are an elemental race like Ifrits and the like, but the difference is that they have ties to ALL FOUR elements, and so they can be very versatile with their use of elemental abilities. They're uncommon creatures, though (and not legal for PFS play) so there are fewer chances to make use of their unique skills.

Racial Traits:

Ability Scores: +2 Strength, +2 Charisma, -2 Intelligence. A combination of Strength and Charisma bonuses is relatively rare, and it makes Sulis perfect as Paladins and battle Oracles, and you can also put together an excellent Dragon Disciple build with them!

Type: Sulis are outsiders with the native subtype, so like the other elemental races they they can’t be affected by spells and effects that target humanoids, such as enlarge person and charm person, so this is a double-edged sword..

Size: Sulis are Medium size, just like humans.

Speed: Sulis move the same speed as humans.

Energy Resistance: Sulis have energy resistance 5 to ALL FOUR elements, which is just incredible for anyone.