I saw the G/W Hardened Scales deck at the SCG Open, and I thought it looked fun, but most of the creatures in it were really bad without the signature enchantment. Plus they didn't get to play with 2 of the best counters cards in Drana and Anafenza. So I corrected that, bringing it from an aggro deck to more midrangey, with the sideboard option of becoming a true midrange deck.
Game plan is to drop Hardened Scales and use Anafenza or Drana to pump your Hangarback Walkers, Wardens, Den Protectors, and Rhinos to ludicrous degrees. Endless One gets efficient at 1 HS and bonkers at 2, and acts as a curve filler since the mana isn't the best, or a late game mana sink. 4 Abzan Charms and 4 Dromoka's Commands act as sources of counters and removal, plus incidental card draw on the former.
Sideboard has the 4th Anafenza since I don't like 4 legendaries main, but she hoses any kind of Deathmist Raptor or Aristocrats strategy. 5 Planeswalkers transform this into a true midrange deck and come in over the Wardens and Dranas in matchups where those aren't good. Feat adds counters and protects against decks with a lot of 1 for 1 removal, and the package of Jaddi Offshoot and Retreat to Kazandu comes in against the Atarka Red decks.
This deck goes over the top of the megamorph decks, can outgrind Jeskai and Esper, and has enough big blockers that Atarka Red is a decent matchup.
Weaknesses of this deck include the mana: it's hard to cast Drana on T3, and I had to add a full 8 painlands to make it feasible. This leads to draws where your mana can hurt you a lot. Deck is somewhat weak to mass removal, but every single card is a 1 card threat, so you can usually grind them out of resources, especially postboard with the walkers. It's also not as fast as the G/W version or the red decks: it can't really kill before T5 at the earliest.
