Whenever two or more creatures attack, put an oil counter on Argent Dais
Faceless Haven Faceless Haven may not look too flashy, but it's consistently been one of the most-played Magic cards ever since its release at the top of the year, and that's because of how little downside there is to using it
(In most cases, this set of cards will contain just one card.) The Creation of Avacyn's second and third chapter abilities refer only to those cards, not those of any other The Creation of Avacyn
On top of that, you have the ability to transform it into Ifrit, Warden of Inferno, an obscene summon that kills a creature right away and eventually transforms back and draws you more cards
One last affordable way to protect your commander from destruction is the Ring of Xathrid
Lightning, Army of One Now we're talkin'