Hearthpwn

Deathrattle Zoolock "Ratlock"

I know there are many Zoo and Deathrattle decks available, but I don´t like running Zombie Chow to heal your opponent in mid or lategame. I´m also a fan of Undertaker, because it works quite well with many cheap DR minions and is a bigger threat than a weak Argent Squire. My opinion on Flame Imp: it does not fit in this deck. Against Hunters or other aggressive decks, taking 6 damage (20% of your whole HP !) can be a bit too much for a sensitive Gul´dan.

I added the Voidcaller to trigger the Doomguard without loosing cards and to avoid that silly situation, where you have Soulfire and Doomguard or double doomguard in your hand. (surprisingly it works really well with only 1 Voidcaller).

How to Mulligan

• Voidwalker , Undertaker ,  or Knife Juggler are good to start with
•  Keep any 2-Mana minion, if you have the Coin, you can also keep a 3-Mana minion
•  Never keep Doomguard or high cost cards (more than 3-Mana)

Gameplay

Try to pump the Undertaker with Deathrattle Minions and try to gain board control. Trade efficiently and try to combine your moves. If you can choose, try to keep Voidcaller until there´s a Doomguard in your hand. Try to combine Power Overwhelming with Deathrattle cards and if possible with Void Terror. Always place your Nerubian Egg off to one side.

Good Combos Early-Game:

•  Voidwalker + The Coin + Undertaker if you have another DR afterwards
•  The Coin + Knife Juggler and pray for him to stay alive ;)
•  The Coin + Haunted Creeper in Turn1, Knife Juggler in Turn2, to trade your creeper against a 3/2 or sth.

Best Combo (thanks to wafffles43):

•  Nerubian Egg (already on the board) + Power Overwhelming -> attack opponent + Void Terror --- 4 dmg to your enemy, a 4/4 and a 7/9 body :D

I hope you enjoy this deck , if you have any suggestions, please feel free to comment below..