Like most Magic: The Gathering cards, the value of Conspiracy depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Time Spiral Timeshifted)
Craft only as a sorcery.) Craft with creature (, Exile this artifact, Exile a creature you control or a creature card from your graveyard: Return this card transformed under its owner's control
Here are all the Enchanted Cards revealed for Shimmering Skies, the 5th set in the Lorcana TCG
Similar to Unholy Heat, the presence of Fury in the format has pushed out certain creatures, and in Furys case the card has almost entirely pushed out small-weenie decks from the format
The biggest downside is the price, which is heftier than a Standard set