While this card is face-up on the field, neither player can Special Summon monsters from the Graveyard.
Well, isn't this an interesting card? Seems Order of Chaos is going to bring us a watered-down version of Royal Oppression. However, it's not a card we can dismiss. There's potential here, even if it's just as a card you have on your side deck.
This card is great to side against decks like Dark World, especially since their special summoning comes from the graveyard. You can use this to bring down Frognarchs, Lightsworns (to a certain degree), X-Sabers, Karakuri, Blackwings, and other decks that use grave revival for big plays.
It's going to be a good surprise element to any grave reliant deck, so don't underestimate it when it comes out. Certainly it's a card that can turn the tide of the game if played right. Who knows, perhaps it can be good in the main deck. Only time will tell.
Let's hope this card doesn't increase in rarity once it comes out, because it's going to be one of those cards with enough force your opponent to play differently. Good card.