Quote from Seneschal »Hello!
I'm the Mill Player who was on coverage and ended 42nd at GP Birmingham.
My list is in the article here
(The Dispel in the sideboard should be a second Set Adrift, but I lost one and couldn't buy one on site!)
I used to play the all in "burn" style with 4 Breaking etc., but a few months ago switched to the somewhat slower style with 4 Orbs, 4 Scribe, and have never looked back.
Manic Scribe in particular is a great card in this deck - aside from the obvious continuous milling (since with 4 Orb it's pretty easy to get delirium), having 3 toughness is excellent - it gives you a chance against decks that would otherwise just run you over, and slows down more controlling decks that want to get in some Snapcaster beats, helping you to mill them out with itself/Orbs.
The other key thing about Scribe & Orb is that they don't target, so you still have game when the opponent has a Leyline in play (which is all too often these days), keeping the milling happening, blocking 2 power creatures, and letting you survive to when you bounce the Leyline (and if they counter your bounce spell, hey ho, more Orb milling).
I see that people are discussing Set Adrift/Echoing Truth; I run both in the SB, but would never go below 2 Echoing Truth. It's an incredibly versatile card, bouncing tokens, buying you extra turns in grindy games (which can make all the difference), answering their sideboard cards (Leyline, Wheel, Blood Moon etc., etc.), and occasionally ruining someone's day by bouncing their Phyrexian Unlife or whatever. That last example obviously doesn't happen often, but it's a good example of why Truth is great - no matter what odd thing your opponent is doing (and let's face it, Modern is full of rogue decks), it almost always gives you some kind of interaction.
I think one of the most important things about Echoing Truth is simply that it's an instant, so you can bounce their Leyline or whatever in their end step and have all your mana next turn to blast them before they can replay it. Also good that it hits multiple copies, as some people will play a second leyline during the game.
I also like Set Adrift for its ability to be "U, destroy target permanent" - I don't think it's a nonbo with Scribe because between fetchlands, Ghost Quarter, the fact that this is a fairly "active" deck, and - crucially - milling yourself with Orbs, taking yourself off Delirium almost never happens. When you're casting it, you probably have at least 10 cards in your own yard, and you only need to leave 3 different ones (Set Adrift being a Sorcery itself).