Low Orbs refers to Fire Orb, Water Orb, Earth Orb, Wind Orb, Light Orb, and Dark Orb. They are much more common than High Orbs.
Despite being a low-tier drop, low orbs are required in high numbers for the Revenant Weapons upgrade process and final uncap of Omega Weapons. They are also used in small numbers to uncap SR and R characters.
|Uncap R to 1★||1|
|Uncap R to 2★||2|
|Uncap R to 3★||3|
|Awakening R to Lvl 2||5|
|Uncap Story SR to 1★||1|
|Uncap SR to 1★||1|
|Uncap Omega Weapon to 4★||100|
|Purchase Seraphic Weapons (SR uncapped)||5|
|Uncap SR Seraphic Weapons to 1★||10|
|Change Rusted Weapon element
|Upgrade Revenant Weapons (step 1)||100|
|Upgrade Revenant Weapons (step 2)||150|
|Upgrade Revenant Weapons (step 3)||200|
|Upgrade Revenant Weapons (step 4)||250|
Low orbs are commonly found in the Elemental Treasure Quests and Angel Halo special quest. Like other basic elemental treasure, they can drop from many other quests, event drawboxes, etc. Mid- to high-level content may only drop the High Orbs instead. The following list is non-exhaustive, but are quests specifically for farming Low Orbs along with other useful treasure.