Obscured Delirium Orb is a stackable currency. It was introduced from PoE 3.10(Delirium League). The price of Obscured Delirium Orb is 23x Chaos Orb.
How to use Obscured Delirium Orb?
It modifies a Map item adding layers of Delirium with the Breach Items reward type. Right click this item then left click a Map item to apply it. Can apply up to 5 to a single Map item. Shift click to unstack.