Mech Mage Deck - Voyage to the Sunken City

Last updated on Apr 13, 2022 at 10:00 by Kat 1 comment

This guide contains detailed Strategy, Mulligan, and deck-building information to help you play Mech Mage in Voyage to the Sunken City expansion meta.

Mech Mage is a midrange deck that is comprised almost entirely of Mech minions in order to fully take advantage of the powerful synergies within the tribe.

The deck is able to consistently open games aggressively while also consistently having the resources to continually pressure opponents throughout long games until they can no longer keep up with the deck.

Card List

Mage Cards
2 Trench Surveyor VSC 2
3 Azsharan Sweeper VSC 2
3 Mecha-Shark VSC 2
3 Seafloor Gateway VSC 2
8 Gaia, the Techtonic VSC 1
Neutral Cards
1 Click-Clocker VSC 2
1 Irondeep Trogg FAV 2
2 Amalgam of the Deep VSC 2
2 Annoy-o-Tron Core 2
2 Deeprun Engineer UiS 2
2 Security Automaton VSC 2
3 Gorillabot A-3 Core 2
3 Seascout Operator VSC 2
4 Kazakus, Golem Shaper FitB 1
5 Ini Stormcoil VSC 1
6 Mothership VSC 2

Import This Deck in Hearthstone


Mech Mage Deck Mulligan Guide

As a midrange deck, Mech Mage relies on a solid opening curve in order to put its pressure onto opponents. To facilite this, almost any combo of early-game cards are good to keep in the mulligan, as long they allow Mana to be spent efficiently.

  • General Mulligan (keep regardless of what your opponent is playing)Click-Clocker, Irondeep Trogg, Deeprun Engineer, Mecha-Shark, Security Automaton, Seafloor Gateway.
  • Mulligan against Aggro (also keep if you think you are playing against an aggressive deck) — No additional cards required.
  • Mulligan against Control (also keep if you think you are playing against a slow deck) — No additional cards required.

Mech Mage Deck Strategy

During the early game, you should look to efficiently play out your minions to make full use of your Mana and secure control of the board. If going first, Irondeep Trogg can be particularly devastating for opponents as it can shutdown the use of Turn 1 Quests as well as the use of The Coin.

While playing out your minions, there are two cards that can win you the game outright, Security Automaton and Mecha-Shark. With that in mind, you should try to be more cautious when playing them. If your opponent has no immediate answer for them and no obvious response from their hand, then you can go ahead and play them on curve, otherwise it can be better to play another minion to help clear up the board first.

From Turn 3 onward, the deck has a strategic fork, where you can continue to play aggressively, or take a more passive approach. When facing Aggro decks with no obvious reactive tools, continuing your aggression is often the best choice to keep up your momentum and close out the game, otherwise holding back a little bit for the late game is usually preferable.

If you opt to hold back from Turn 3, there are two things you should look to achieve. Firstly, find a copy of Mecha-Shark, and secondly, you should look to apply Mana-Cost reductions like Seafloor Gateway and Deeprun Engineer. When combined together, Mecha-Shark can be combined with many cheap, discounted Mechs to unleash a barrage of damage upon your opponent. This allows you to obliterate your opponent's board, securing you a both value and tempo advantage, which is often essential for beating other Mech Mage and board-oriented decks. Alternatively, the damage can also be applied directly to your opponent, allowing you to burst down more controlling archetypes that would otherwise continually clear your board and heal up and damage you deal.

Against Aggro, it is best to be proactive and fight for the board throughout the game, using the tempo advantage to stick Mecha-Sharks and Seafloor Gateways to the board that can snowball out of control. The exception to this is against other Mech Mages where, if played right, the first person to play out Mecha-Sharks will often lose as the board can simply be cleared by opposing Mecha-Sharks.

Against Control, you should aim for a much more conservative approach, making full use of cards like Gorillabot A-3 and Amalgam of the Deep to put on light pressure, while generating resources that can be used as part of Mecha-Shark's burst damage to close out the game.

Mech Mage Deck Card Swaps

2x Irondeep Trogg can be swapped out for 2x Shivering Sorceress based on personal preference.


  • 13 Apr. 2022: Guide added.
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