It's a crafting ingredient for Astrologist Level 4. But I've never found one, not in island chests or rewards from cults/temple guardians...How do you get them? Do they have any other purpose besides crafting?

Edit: The same goes for Nightcats, used for Warehouse Level 6, Money Tree Saplings (Townhall Level 5), and Spirit in a Jar (Stable Level 5). Are these all just exceptionally rare drops?

You get it by completing trade requests on the battlefield map ^^ When you are on the map you can sometimes see a "blank is looking for ## blank". Usually 100 of an object. You can bring it to the portal to receive your item.

I've never seen them anywhere else but the tactical map, but you can find them in the player trades and exchanges. The ancient horn is another such item.

Oh, ok. Thanks!

Sort of an extension of this question - do you have to hold the portal for a set period of time to make the trade? Or can you trade as soon as you reach the portal? Also, if there is an active trade, can it only be made by one player? Or can multiple players make that trade? If the latter, how long does the trade last?