It produces mana when it comes down unlike a Signet and even in a mono-color deck, it can provide extra mana as you curve out without having to feed mana into it or have it come in tapped
I think the idea is tied similarly to peoples love of factions, as seen during our trips to Ravnica, Tarkir, and Alara
It doesnt look too exciting compared to other options, but I foresee this Room being one of the most-played in Commander when the dust settles
Iono became one of the strongest Pokmon TCG cards because it can win games on its own by disrupting an opponent at the perfect time
Simply readjust the setting and get a different result
An esteemed fellow collector and E4 member has written a very detailed article about the FPO cards, which can be found here: FPO - For Position Only Cards Official Guide (Additional photo upload pending) Matchprint cards These cards were used for color proofing before their set officially went into print