With the introduction of the new sculk blocks and the warden mob in 1.19, an origin themed around these new features seems like a good addition the Origins mod. Introducing the Sculkling Origin!
Powers:
-Burrow:You can phase into sculk related blocks
-Quiet: Sculk sensors don't detect your footsteps
-Sonic Boom: Let the vibrations loose on your target!
-Fire Immunity: You are immune to all types of fire damage
Weaknesses:
-Impaired Vision: You always have a cyan vignette on your screen
-Tied to the Sculk: You cannot regen unless you are near a sculk catalyst
-Rebirth from Ruins: As a lost soul who was revived by the sculk, you respawn at the closest ancient city