Resourceful Defense is a pretty cool but narrow card, but Bane of Progress, Walking Ballista, and Damning Verdict are all pretty useful Commander cards
When first played, this Ruby ink card can immediately banish one of the opponent's characters, in addition to Maleficent having a powerful attack of seven
This should give you a good idea of what control decks are all about
And third: The mana bases suck , as usual
As prices rise and the theoretical loss increases, justifying opening a box for anything but entertainment value becomes incredibly difficult
You can load them up with counters, double those counters with things like Vorinclex, Monstrous Raider, slap on some equipment like Sword of Fire and Ice, or enchant your unblockable creatures with Eldrazi Conscription and the like