The owner can recast it, but it's temporarily out of play, which can be a significant tempo setback for your opponent
Shelob, Child of Ungoliant provides ongoing removal in creature combat, and it punishes opponents whenever their creatures fall to your deathtouching swarm by turning them into copy tokens that are food and that retain those creatures abilities
When you put the "extra level" removal spell in your deck beyond the tier one options (Lightning Bolt, Path to Exile, Fatal Push) you are looking for some major upside, either in card advantage like Kolaghan's Command, or in versatility like Assassin's Trophy
Like most Magic: The Gathering cards, the value of Villainous Wealth 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 (Khans of Tarkir)
Examining the prices for the special art variants in MTG Aetherdrift, its clear that these ideas actually are widespread