Well you think people would be excited about a new card, especially one with such cool art. It's in the bazaar too so it's available to everyone right away. Imagine if Phoenix just came out? It would be everywhere.
I bumped into my friend (who doesn't go on these forums) a day or two after the update went live. Big fire guy, runs mono fire 90% of the time. He said to me "Seraphs suck".
This card just doesn't really have a niche. It's ability is not only really expensive as you have to pay for it every turn, but also useless as you can't use it right away.