The overprinting is working, Charlie Hurlocker, a senior consultant for CGC, a company that evaluates the quality of cards before auctions, told Polygon
If they have eight or more cards in their graveyards, your Soaring Thought-Thief, Into the Story, or Lullmage's Domination go from good to great
I can either play with Freyja or Bifrost as my Commander: it is the best
These are the cards I personally think you should include to shift 'Abzan's Defense' toward a toughness-matters deck
The most important of these aspects is that it is cheap allowing you to fight back a bit with useful things to do earlier in the game against the tempo wars of the cheap agro decks
Just be aware of the turn they are able to cast Be Prepared so you don't over commit too many characters into the board wipe