Hearthpwn

i feel [card]Zombie Chow [/card]  is a little out of date.  Control decks will use early removal spells to clear the board.   Aggro and face decks will play an early minions, but not trade,  They will try to clear your board with removal too.      What this means is, you are allowing your opponent the chance to rid them self of a that early removal card.   Other wise,  early removal spells are dead cards for your opponent if you did not have early minions your self.   Dead cards are amazing for Mill as his hand will fill up faster.  The 4 card advantage you get for nationalize is more than enough.

[card]Dancing Swords[/card] the card has it's issues,  First off, Against control,  You are just giving them an ez target for removal spells.  the 4/4 body can't stand up to most big minions control will through at you.     Against Face and Aggro,  The 4/4 body is OK at fight for board control, But,  You don't want aggro and face decks to draw cards for free.  They normally can empty their hand and you can't burn cards.

For the 2 above I would sub out 2 Force of Natures and 2 poison seeds for better board control.  Poison seeds combos well with Star fall and force of nature for total board clear.

Deathlord  This card is ok vs Aggro. It can slow them down a lot.  But!  Mill druid is not something I would play in an aggro heave meta.  Against control this feels like a dead card.  If I play it early,  they get to burn removal.  the RNG gods always seem against me and they get Ragnaros, Ysara, or Dr balance on trun 3 or 4.

You may want to work in a silence to deal with priest better and some OTK / combo decks.

Check out this one http://www.hearthpwn.com/decks/199212-legend-henriquexpros-mill-druid

I like that one much better!