All amulet summons from shop look like this when bought:
10 Pack Kakurt Amulet of Call
http://warofdragons.com/artifact_info.php?artikul_id=1000398
10 Pack Phitzell Amulet of Call
http://warofdragons.com/artifact_info.php?artikul_id=1000396
10 Pack Iguraon Amulet of Call
http://warofdragons.com/artifact_info.php?artikul_id=1000394
10 Pack Tiger Amulet of Call
http://warofdragons.com/artifact_info.php?artikul_id=1000392
10 pack amulet of Phkadd Bears
http://warofdragons.com/artifact_info.php?artikul_id=1000390
10 Pack Zigred Amulet of Call
http://warofdragons.com/artifact_info.php?artikul_id=1000387
Once bought they "ARE" stacked, to be able to use them after being purchased you have to go to your backpack and "UNSTACK" them by clicking on the item and confirming the action before they are available to use in your combat pack. Once unstacked they "WILL" take up 10 slots of space in your backpack.
ALSO! the items do state that you can only "UNSTACK" 3 packs in a week, now either this is per kind of amulet, or 3 kinds in total, I do not know (Untested, do not have the money to blow to test this out!)
Now lastly,
Wind Elixir of Valor
http://warofdragons.com/artifact_info.php?artikul_id=1000714
For the time being, assume this works as a regular valor potion that lasts for 30 mins to be on the safe side until admin's and their teams update the descriptions for the items in the wonders emporium.
Thank you for reading this guide.
-Jarlaxle-
(will update this more once more info is posted)