The combo with Verges and Fabled Passage will open up three color manabases that were awkward before
Cerberus is a nice summon saga that allows you to copy an instant or sorcery for free with the second chapter and twice on the third one
Its way easier to put graveyard hate in your 75 cards than piles of Doom Blades, and for that hate to be good against Regent it needs to be efficient, hit a bunch of cards, and importantly have fair value
Summon: Magus Sisters unleashes a bit of chaos to keep things fresh and interesting, while still having a strategy behind it
But if at least one counter remains on Ballista at all times, removing a counter from Ballista to ping itself will result in two more +1/+1 counters on the construct with the other replacement effects active
We got to see a bunch of commons today and, while they arent hugely exciting power level-wise, they do tell us a fair bit about the sets mechanical direction