Drops from a Djinn in God Lands
The Trial of the Illusionist is the first part to a two part dungeon, you will spawn in with 5 illusion manifestations all around you, only 1 of these can do damage to you and that is the one you need to kill. I recommend focusing the one directly to your left then the one beneath you, this gives you a nice path to circle if one of those two was not the correct manifestation.
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Here's a small map for those that wants to rush this as a Rogue.

This map was provided by Norga, a big thanks goes out to him.

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