This recipe requires an artifact ingredient. Pattern: Dryad's Tower Shield must be present in your inventory or the settlement's storage for the recipe to show up in the crafting station.
You can learn more about this from our Crafting Artifacts, Cooking Recipes and Schematics guide.
why would anyone craft this over the ori tshield?
90% chance (100% with Azoth) to roll one of the following attributes
because from everything i read it can go 600 legendary with 4 perks. this of course if i understand everything im reading, i could be wrong