Hello everybody! Today I'm digging around in the Tolarian Academy for some more paper, since I seem to have used up all of mine writing out the changelog for the rules and Oracle. Dominaria was a big one. Luckily there are entire libraries of abandoned arcane lore, just waiting for me to scrub off the ink so I can write more notes.
We had four major templating changes that you can read about here. This resulted in around 3,400 cards receiving errata. But I know you, dear readers. You care about nitty-gritty details and weird quirky changes, not just the big splashy ones.
In addition to rules changes to support those changes, we've made a whole suite of smaller fixups in addition to the necessary additions to make Dominaria cards work. Don't miss the huge Two-Headed Giant change—it's been somewhat muffled by the louder changes that impact Standard and Modern, but it's a thing.
This is also the first update bulletin with a silver lining. Some of you may tremble in fear, but rest assured that black-bordered world is safe from Rosewater's argentum machinations. Yes, silver-bordered cards will be mentioned as having received errata in my articles from here on, as those cards are now maintained and updated like their black-bordered cousins.
You can find the Comprehensive Rules here on our website, and Oracle text updated in Gatherer. Keep in mind that this article was written before the rules changes were finalized in editing, so there may be minor deviations from what I describe below.