These ancient fighters took to summoning weapons from thin air, and using their souls to power the weapon they hold.
Æther
The Spirit Warrior gains proficiency with all weapons with the “Æther” property, and can summon an Æther Pistol, Knife, or Sword once per combat. This illusory weapon lasts for 1 minute. If the Spirit Warrior purchases an Æther weapon and wield it instead of summoning one, they can instead use this ability to increase their weapon’s base damage by +1k1.
This replaces the Martial Talent gained at 1st level.
Spell Shield
When the Spirit Warrior gains this ability, they choose a type of spellcasting (example Arcane, Divine, Psychic, etc.) Against spells of this kind they gain their Resistance as a bonus to all Defenses against these spells (effectively doubling Resistance vs. spells of that type). Against all other types of spells, they add ½ their Resistance.
This replaces Unshakable.
Magic Weapon
Spirit Warrior’s Æther weapons become more deadly and are fueled by magic. Weapons with the Æther property the Spirit Warrior wields increase Penetration by 1, and damage by +1k0 for each level they’d normally gain Weapon Training.
This replaces Weapon Training.