Omnotron Defense System Guide with Cheap Decks for Blackrock Mountain

Table of Contents

• 1. Health, Hero Power, Cards, Etc.
• 2. Strategy and Deck Building

Omnotron Defense System is the first boss of the Hidden Laboratory, the fifth and final wing of Blackrock Mountain. In this guide, you will learn how to use cheap decks to defeat Omnotron in both Normal and Heroic modes.

The Omnotron fight is based around various Hero Power minions that are summoned which all have various symmetrical effects on the fight. On Normal mode, no particular strategies are required, but packing extra spells in your deck to take advantage of the Spell Damage and Spell Cost reduction effects can be beneficial.

On Heroic Mode, building decks that abuse these mechanics is almost required, since you will quickly be outclassed if you try to fight fairly. Various decks that do take strong advantage of these effects, such as our Heroic decks listed below, can make the fight very straightforward.

To help you build your decks and defeat Omnotron in both modes, here are decks we defeated him with:

• basic-card-only Mage deck for Omnotron in Normal mode;
• low-budget Mage deck for Omnotron in Heroic Mode;
• cheap Shaman deck for Omnotron in Heroic Mode;
• mid-budget Shaman deck for Omnotron in Heroic Mode.