
Free Agent - EU
Full guide with detailed explanation on everything about Seris mechanics can be found at:
https://forums.hirezstudios.com/paladins/topic/2162/seris-comprehensive-guide-season-3
Enjoy!
Here's the starter build taken straight from the guide.

Mortal Reach
Restore Soul
Increase the range of Restore Soul by 300% and reduce the time between Healing ticks by 20%.
Level 1

Umbral Gait
Weapon
Your Movement Speed is increased by 40% while any enemy is marked with a Soul Orb stack.
Level 5

Blood Pact
Restore Soul
Heal for 280 every 1s while channeling Restore Soul.
Level 4

Veil
Shadow Travel
Reduce the cast time of Shadow Travel by 30%.
Level 3

Fade to Black
Restore Soul
Reduce the Cooldown of Shadow Travel by 1.6s after activating Restore Soul. This can only occur once every 5s.
Level 2

Spirit Leech
Restore Soul
Regenerate 2 Ammo every 0.5s while channeling Restore Soul.
Level 1

Nimble
Armor
Gain 21% Movement Speed.
Level 3

Master Riding
Armor
Increase your Mount Speed by 45%.
Level 3

Haven
Armor
Reduce the Damage you take from Direct and Area of Effect attacks by 18%.
Level 3

Chronos
Armor
Reduce the Cooldown of all your abilities by 30%.