Chaz here, and I'll be taking over a familiar segment presented formerly by Ryan Overturf. I wanted to bring these updates back on a semi-regular basis and quickly update Insiders about market movement and specific card choices - and explore why!
For this update, I'll be focusing on Black Sun's Zenith. A card which has shown steady growth over the last month - and likely had to do with Hapatra, Vizier of Poisons great reception by the Commander/EDH community. While that certainly had a lot to do with it - I do think the card is a bonafide staple in this format and a great analytics tool in Edhrec.com backs that up. While the number of decks that recorded is just shy of 9,000 out of a total 150,000 decks, the number of Commanders this card works well with is vast.
There could be a case for including this card into almost every deck playing the color black. Most of the generals reported, are among the highest built Commanders (again according to Edhrec).
Let's also look at the trend via MTGStocks:
There's been a steady trend right after Amonkhet's release, and the subsequent Hapatra hype. It also recently dodged a Commander Anthology reprint - so the outlook looks promising as a continued trend. With one foil pack printing (Mirrodin Besieged), and one full art printing (Game Day) the overall supply has generally dwindled in that regard. We can look back to an increase in foil/full art versions as far back as during the Tiny Leaders craze - and while the pack/pack foil printings settled, the Game Day Promo generally stayed in the $15 range.
Looking at the supply through the internet - it seems the overall copies have been steadily decreasing (not just foils) in the United States. There seems to be more supply elsewhere, with a huge disparity in price. It's something to keep an eye on, especially for the Game Day Promo version. I do think there's still time to purchase in - but the window for much upside is likely closing as this continues to record increases almost daily.