Spellbook Vendor: This was totally adequate and the scry was definitely nice, but it's just not very interesting.

Phelia: Interested in this as something that can help contribute to ETB/blink strategies.

Windbrisk Heights: Sad to see this go after so long, but it's by far the least interesting and least synergistic cheats card in a cube that's got a lot of that going on.

Malcolm: Cutting this not because it's bad but because blue's just too dense with two-mana looters.

Emrakul's Messenger: Not sure how good this'll be, but it's definitely interesting.

Rotting Regisaur: This is in an awkward position where the body isn't GREAT in decks that can make good use of the discard and the discard is really painful in decks that want a big body. It definitely has games where it shines, but it's also a bit of a trap for newer drafters, so I think its time has expired.

Etched Slith: Bringing the curve down a bit in black. I'm not sure if this is quite fast enough to be good, and I think it depends on how relevant the second half of its trigger is.

Fell the Profane: In the spirit of Dehorizonization, I'm trying to avoid doing pure power-level upgrades from MH3. I'm making an exception for this, despite being such a direct upgrade over Hagra Mauling, for a few reasons. First, I do want a bit more density of planeswalker removal. Second, one-for-one answers is a very safe place to put power. And third, I'm thrilled to get rid of the useless extra text on Mauling.

Victimize: Although this is a pretty clear upgrade over Blood for Bones, the creatures entering tapped also makes it less "shields up" giving opposing decks a potentially better chance of winning out despite a big reanimation play.

Malevolent Rumble: If nothing else, I hope this will be easier to reason about than Invasion.

Bala Ged Recovery: This was totally solid, I just want to swap it out for something that's a bit more on-board and a bit less samey.

Rip Apart: Totally fine, just boring.

Phlage: Red is one of the best colors at filling up the graveyard and has among the least competition for using it, so it'll be interesting to see how this plays. I'm hoping it helps encourage some Big Boros decks.

Saheeli, the Sun's Brilliance: Too slow, too fragile, too heavily committed to one specific color pair.

Invert Polarity: Wacky! But possibly strong. Let's find out!

Saheeli, Sublime Artificer: Just not making it into decks these days, in large part because it's SO hard to protect her the turn she comes down.

Tamiyo: I'm a little worried that this is TOO good, but I really like it as something cheap and evasive that can hold equipment or drop in a ninja.