A chaos deck that I have made to make your opponent believed that you are playing a basic "I attack your zone" deck and finally finishing by totaly discarding your opponent deck using the following things :
Isaera + excavation + Walking Sacrifice + Great Unclean
Draw all you deck less the last 5 cards, play dark vision, take the last card that you need (if the last plague monk was your last card) draw 3 more cards.
Play your last 1 2 or 3 plague monk in hand if needed, using your innovation if needed
Then play all your 0 cost spell + your low cost spell and discard your opponent deck.
Lord of change could be great instead of the Chaos Knights but the cost is a little bit ....
The deck is funny but has some great weakness one of the most important is the Rune of dismay
If you have some advice...
Units (24) :
Isaera x 3
Fledgling Chaos Spawn x 3
Chaos Knights x 3
Plague monk x 3
Braying Gorx 3
Festering Nurglings x 3
Walking sacrifice x 3
Great unclean x 3
Support (8) :
Warpstone excavation x 3
Contested village x 3
Dark elf chaos alliance x 2
Tactics (20):
Blood summoning x 3
Bleesing of tzeench x 3
Flames of tzeentch x 2
Cloud of Fliesx 2
Dark vision x 2
Chillwind x 3
Cloying Quagmire x 3
Innovation x 2