My two CP:
Eldritch Runestone: Meh. Okay, it is better than the Ring of Fire Absorption, but generally worse than Ring of FIre Resistance. Rare runestones seem to run about the same power level as rare rings, So the limited supply Exalted (Rare+) runestone should be obviously better. I also agree that it feels targeted to one specific dungeon and is not as useful in the others. I definitely would not burn one of my dwindling supply of ERs on this (especially with the amount of Fire Reduction already out there).
Amulet of Wonder: I like the effect. I realize its a hassle for the app builder, and arguably is a bit overpowered for Druids and Rogues who have their Legendary Neck slots. But from a standpoint of being useful and interesting, it definitely passes.
Special: Sorry, but not seeing it. One UR consumable is not worth 4-5 UC consumables. Because that's basically what this is, three Dex potions and a healing potion. If you want to make it an Angel: add 2 points of Sacred damage to all attacks/spells, Heal 2 (self or other, 1/room), immune to possession and falling damage, and +3 damage taken from Darkrift. Now that would be Emmet Brickowski worthy.
Applications programming is a race between software engineers, who strive to produce idiot-proof programs, and the Universe, which strives to produce bigger idiots. <br /><br />So far, the Universe is winning.