In my opinion Oracle Ceresa, Magnar and Queen Procipinee should have the following trait priorities:

1. Path of the Mage (they are mages)

2. Spellbooks (high level spells are useful)

3. Evoker (very useful for damage spells)

4. Spell Resistance (reduces the chance of being interrupted by counterspells)

5. Summoner I and II (Oracle Ceresa and Queen Procipinee) or Quick and Fast (Magnar)

6. Affinity (reduces the cost of tactical spells)

7. Other

All Sovereigns should buy a horse or a warg as soon as possible, because the movement and initiative bonus is very good.