We all know the classics of this genre: Force of Will, Deadly Rollick, Force of Negation, etc
In a meta heavily influenced by the Persist mechanic in Lorwyn Eclipsed and the recursion threats found in Duskmourn: House of Horror, simple destroy effects often fall short
An opponent chooses two of them
A 4/3 vigilance that's all creature types is reminiscent of Mutavault, and Faceless Haven pairs well with any monocolor typal deck
Secondary Markets: For older or highly exclusive event promos, dedicated trading card platforms and community trading groups are the primary source for acquisition
Soaking up the damage from not just you, but other permanents you control as well, means it's a safety valve for lots of decks - especially ones that play multiple planeswalkers