Thought-Knot Seer
 
I often talk about my affection for Gruul, but not so much about my Orzhov decks. Back in the day, I actually played a Black Hand variant even more than my Gruul deck, and made literal and spiritual updates of times over the years (Stillmoon Cavalier may be an even better reason to go Orzhov than the Ghost Council). One of the best creatures in those colors is Tidehollow Sculler. It's hard not to include him in a relevantly-colored deck that wants creatures - even a deck like Soul Sisters has weak points, but he takes out anything and everything.
 
Wizards of the Coast may not have plans to revisit Alara imminently, but the Sculler's spirit lives on in Thought-Knot Seer. Actually, the fact that the Seer is more of a threat in combat and doesn't return the stolen card directly - a random draw on death is certainly comforting, but that End Hostilities that would have stopped you from overextending is never coming back - means that for the first time since then, players in those larger card pools have a real choice to make. If you're going midrange and you can commit to the colorless mana symbol, you may want to forego speed in favor of the more relevant combat statistics and increased resiliency (much as I love the Sculler, it does feel bad losing your Thoughtseize variant to Ancient Grudge).
 
Constructed: 4/5
Casual: 4/5
Limited: 4/5
Multiplayer: 4/5
EDH/Commander: 4/5

Thought-Knot Seer
 
It's sort of like Vendillion Clique. Sort of. A little worse in some ways, a bit better in others. An ETB effect means you can flicker it, though you could also do that with Clique too. The out and out exiling of a card you pick is pretty solid on a 4/4 body for 4. It's a control card, and that little peek and pluck is worth a lot to control.
 
Constructed: 4.5
Casual: 4.5
Limited: 5
Multiplayer: 4
EDH: 3