Especially because no matter what you hang on to the massive dragon

Be very careful when trading for the following cards on this list: Tropical Island Temple Garden Stomping Ground Overgrown Tomb Scared Foundry Breeding Pool Misty Rainforst Celestial Colonnade Flooded Strand Arid Mesa Wasteland Inkmoth Nexus Elspeth Sun's Champion Tarmogoyf Cavern of Souls Scalding Tarn Hallowed Fountain Polluted Delta Surgical Extraction Sol Ring Underground sea Maesh Flats Reflecting Pool Mutavault Wooded Foothills Windswept Health Watery Grave Godless Shrine Nykthos, Shrine to Nyx Savannah Blood Crypt Verdant Catacombs Kalonian Hydra Avacyn, Angel of Hope Thassa, God of the sea, Jace, Architect of Thought Swords to Plowshares Chalice of the Void Goblin guide it that betrays sword of war and peace sword of fire and ice purphoros god of the forge sun titan sensei's divining top demonic tutor elspeth knight-errant thoughtseize pernicious deed sword of feast and famine goblin lackey goblin pilcdriver inquistion of kozilek engineered explosives kokusho the evening star bonfire of the damned ral zarek stoneforge mystic lona shield of emeria spellskite karn liberated tundra path to exile figure of destiny Ather Vial Vampiric Tutor Snapcaster Mage Academy Ruins Batterskull Forcc of Will Leyline of Sanctity Intuition Sphinx's Revelation Reanimate New...er News

It also can't be blocked by white creatures, which was one of the shadow strategies (white shadow decks and black shadow decks)
In Summary This is a long article, and while there is a lot of detail here, I also want to make sure it has clear takeaways for those who aren't diving in as deep, so here's a summary: Early information and data on Commander Brackets is very encouraging
Plenty of players are on a tight budget and will be happy to acquire hundreds of cards at once for such a great price
Do Battle Cards Go In Your Deck