Devas are a type of Celestial creature. They can be summoned to a spellcaster's aid with the spell Planar Ally or Sights of the Seelie: Summon Deva from the Scroll of Bestial Communion.
Deva Mace - Main Hand Attack
Hit an enemy with all your might to deal damage and possibly Daze them.
Your weapon absorbs your wrath as you strike, possibly Frightening your target.
Revive a companion. They return to life with 1 Hit point.
Fly to a target position.
Help an ally in need.