The Amulet of Sh’all

The Amulet of Sh’all is an artifact of great power in Daniel Kravitz, Chosen One, a segment in It's All Been Done Radio Hour.
It is unknown how Costello came into possession of it, but he used it to try to summon Suralic the Nighteater, in combination with slaughtering livestock. Daniel Kravitz and team stopped Costello before he could complete his spells ("Jant Braidley").
After Alfredo studied it, it was determined it could be used to enhance Daniel's ancient Chosen One abilities, giving a boost to the powers ("Cave of Wonders").
During the battle with Monbo's army, Daniel uses the amulet to recharge himself. However, Daniel allows it to build up too much charge, and while Daniel is able to stop the army, his Stun Wave destroying his enemies instead of merely stunning them, the effort kills Daniel ("With Great Power...").