The strategy behind this deck is to play Cube over Deathlord, activating Cube's deathrattle inmediatly at least once, having Unstable Ghoul+Toxic Arrow in hand.

In subsequent turns deathrattles are triggered (by deaths or by spells) so you will pull minions from your opponent's deck and spam Deathlords. This is safe since your Deathlords hopefully will protect your face. Once the Deathlord wave is finishing, clean the board with Toxic Arrow combo.

N'Zoth provides a final Deathlord wave, hopefully fatiguing your opponent while giving survability. Murlocs can be finishers, and also card draw if it is needed.

This deck is really fun, and actually works in some matchups, but is not thought by no means to be competitive.