The fact that the deck has two commanders also ups the power level quite a bit because you essentially start the game with two extra cards in hand and fill two spots on your curve
This vampire angel has somewhat of keyword soup of abilities, and its useful both as a lifegain commander and in support of one
Avacyn brings a lot of utility and it will be interesting to see in what decks she appears
Not only do we have 6 new sac ready lands in the format thanks to MH1, but they also gave us back the full cycle of Onslaught single mana cycling lands, Tectonic Reformation, Ruination Rioter, and weve already got Seismic Assault and Life from the Loam
but it wasn't quite enough things of quite enough power to be worth forcing a synergy around them
Also, note that there are tons of great card-draw in White that's not here like Sage's Reverie, Stone Haven Outfitter, Lady of Laughter and the legendary Faramir, Field Commander that have various triggers either ETB or over time when something happens.
