This happened at a time when banlist updates happened on to a strict schedule, so WotC didnt ban Eye of Ugin until after three more Grand Prixes had been played despite knowing how powerful it was
To buy time, the deck runs a ton of disruption, including counterspells like Pact of Negation, and removal like Swords to Plowshares
Raffine, Scheming Seer If Orzhov midrange is a less attractive option post-rotation, the reasons for stretching to a third color are about to really dry up
While not the most glorious job, Shalai does a great job of keeping the threats you need on the board and protecting you from direct damage or targeted discard, which can also slow you down
Now, this is a fun combo with Mycosynth Lattice, because the Lattice turns everything into an Artifact, so its pretty easy to get off, but it can still be stopped in a fair few ways