Temur Field packs Precognition Field in the mainboard, but still brings the beats to beat up on uninteractive opponents.
Birds of Paradise is the freakiest card in the list by a fair margin. Here's a one-mana spell that's weak in the late-game Precognition Field aspires to and is stranded on top of the deck when we have the enchantment in play. So what gives?
Birds ramps us into Field itself, which I found was important for a pre-board plan revolving around the card. Otherwise, we need a ton of interaction to not just get rolled by aggro decks. It's also a high-priority removal target on turn one, drawing Fatal Pushes away from Tarmogoyf and Bolts away from Young Pyromancer. Goyf easily grows to 5/6 in this deck since we can Loot away extra fields, and Pyromancer spirals out of control fast both with Field and with good ol' Manamorphose.
Dead Birds also feed Traverse the Ulvenwald, a boon since it's hard to include Mishra's Bauble alongside Field. And when Birds survives, the upside is real: we can play Pyromancer and immediately get a token, and follow that up with Field or Bloodbraid Elf. Having extra mana lying around also doesn't hurt when we're pseudo-storming off the top of our deck.
Bedlam, Snap, and Bloodbraid are all Traverse the Ulvenwald targets. It's usually preferable to just dig up Bedlam Reveler and slam it that turn or the next, but when we lack instants and sorceries in the graveyard, Elf is a better pick. Snapcaster usually doubles as a searchable removal spell, or adds a body by recasting Traverse. Additionally, having all those one-ofs in the deck keeps opponents guessing when we draw them naturally.
Spells
I really wanted to build a Precognition Field deck with Traverse the Ulvenwald. Without delirium, the card casts off the top for a basic, letting us immediately cast whatever instant remains or get a shuffle. And with, it gives us a way to functionally cast creatures off the Field.
The problem was supplementing Traverse. I started with a Temur shell because I'm comfortable in the colors and didn't want to abandon Serum Visions. Red was a natural include for Tarfire and Lightning Bolt, the latter of which is a crucial include alongside Field.
Faithless Looting is another key piece of the puzzle. It sifts through extra Fields and helps us find one when we don't have the enchantment handy, and even turns on delirium in this deck. Going minus early isn't such a problem when we can snowball card advantage with a Field later. It's also a fantastic Reveler enabler, joining Manamorphose and our other cantrips in powering out the Devil reliably.
Sideboard
More Pyromancers give us a plan against graveyard hate, and the counterspells let us beat spell-based combo and Tron. Field isn't necessarily dead in these matchups since we can push it out a turn early; having one in play lets us set up permission off the top of the deck with Serum Visions, for example, or otherwise just draw into what we need.
