Ravnica Allegiance is out, and it's time for another Pack 1, Pick 1 article. I've scoured the set and divided the cards into four categories (plus the secret fifth category of "unranked"). These are the cards you want to be looking for when you open your pack, and the ones in the higher tiers will strongly influence where your draft goes.
Before we dive in, I should mention what a guild-based format does to Draft. There are five two-color guilds represented in this set, and 99% of decks will fall into those color combinations (though sometimes you will splash a third color). That means that if you start with some great white cards, you should look to combine them with blue or black—going green-white or red-white is not going to yield good results. Armed with that knowledge, let's get to it.
The Best of the Best
These are the cards you are overjoyed to open, and only a sense of politeness stops you from audibly windmill slamming them at your draft table. These are true bombs, and the best cards in the set. If I start with one of these, I'll try very hard to make sure I can play it.
The Best of the Rest
These are cards you are happy to take first pick and are well above the average. The premium commons and uncommons live here, as well as the solid rares. These cards would push me toward their colors, but not nearly as much as the first category.
Solid First Picks
This category is full of cards you will often take first pick but won't be jumping for joy about. These are the good commons and decent uncommons, with a few rares peppered in for flavor. These are about average for first picks, and cards you're definitely fine taking as a result.
I'm First-Picking This?
This last category houses the average commons and uncommons, none of which you're happy to be taking first. Still, you will often be doing so, and it's good to know which are valid when you haven't opened a great pack. These cards are cards you'll always play and are happy enough doing so, but you would rather not kick off your draft with them.
The cards not on these lists are cards I really hope I'm not first-picking, and hopefully you won't be either. These lists should give you a good starting place and help ensure you don't inadvertently pass something awesome. Good luck drafting Ravnica Allegiance, and I'll see you in the Draft queues!