Like most Magic: The Gathering cards, the value of Underworld Breach 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 (Theros Beyond Death)
Dead / Gone Theres nothing wrong with Dead / Gone, other than that the Gone side is in the blue color pie, so this card could only be made in the Time Spiral block
An odd payoff is more of insurance against a specific kind of interaction, take a look at some cards that make your creature lose all abilities
Of course, if you use that ability on Silumgar, you'll lose control of the creature you originally stole when they entered the battlefield
But youd be mistaken
For example, you may cast an artifact creature spell as your artifact spell and cast another artifact creature spell as your creature spell