So this got spoiled:
Gate Colossus 8
Artifact Creature
Costs 1 less for each Gate you control.
Can't be blocked by creatures with power 2 or less.
Whenever you play a Gate, if this is in your graveyard, you can put it on top of your library.
8/8
So we've also got Maze's End, Circuitous Route, Crackling Perimeter, District Guide, Gatecreeper Vine, Guild Summit - which is almost a one-sided Horn of Greed, Saruli Gatekeepers
So at what point can you make some kind of turboland Gate deck? Or does the citp bit just make it impossible? Amulet of Vigor can actually make that a positive in multiples. Manabond can get a ton of lands onto the battlefield in a hurry, as can Summer Bloom and Exploration. Ramunap Excavator and Crucible are options too if you're just dumping lands in the 'yard.
I dunno, it might not be remotely competitive, but it feels like they're getting close to something here. I mean, Crackling Perimeter is basically a better Hecatomb AND a better Koth ultimate, all for only 2 mana. (better because you can use any Gate, not better in that it doesn't hit critters)
Like I said, I dunno, I think we're maybe 1 or 2 more solid cards away from something. See what else this set brings. Anyone else have any thoughts on this?