This deck takes advantage of Val’Anyr’s ability to latch onto minions and then recycle itself. For example if you get Val on Immortal Prelate it will shuffle an additional Val into your deck. Also Da Undatakah will take Prelate’s effect, so if you end up with Val on him it’s beneficial as well. Shuffling another Undatakah back into your deck with Val’Anyr Equipped. He will also bring a 7/7 and 8/8 dinosaur when he dies due to Mechano-Egg and Mechanical Whelp. The Corpsetaker package works well with the amount of lifesteal, taunt, and divine shield in the deck. The mech Package works well with Eggs and Whelps. Saronite is good in combination with Val’Anyr as well because it copies it onto 2 bodies. Dinosize and Steed are also great with Prelate, and both reduce the cost of Shirvallah. I will explain each decision to the best of my ability for this deck.
Glow-Tron – Cheap efficient body and also has Magnetize for mech synergies.
Crystalsmith Kangor – Trigger for Corpstaker and Glass Knight. Good survivability in some situations.
Crystology – Searches Glow-Tron, Kangor, Prelate, Gatekeeper, and Rummaging Kobold.
Immortal Prelate – Gets huge value from Val’Anyr, Spikeridged Steed, and Dinosize.
Bronze Gatekeeper – Taunt for defense and Magnetize.
Rummaging Kobold – In-case Val’Anyr gets polymorphed.
Annoy-O-Module – Amazing Defense and Magnetize.
Corpsetaker – Good healing and survivability. Triggers off of a lot in this deck.
Saronite Chain Gang – Good defense and amazing with Val’Anyr.
Glass Knight – Triggers from Kangor, Corpsetaker, Zilliax, and Shirvallah.
Mechano-Egg – Multitude of Magnetize effects to make it a threat. Revives more with Undatakah and Kangor’s Endless Army.
Zilliax – Amazing card overall, but also good in this deck(Triggers Corpsetaker, Mech Synergies, Good with Val’Anyr, etc.)
Mechanical Whelp – Mechano-Egg 2.0.
Spikeridged Steed – Great for Egg/Whelp and also great with Prelate.
Val’Anyr – Centerpiece of the deck. Ton of value to be had with this card.
Kangor’s Endless Army – Brings back fallen mechs that summon mechs when they die.
Da Undatakah – There are 3 deathrattles in the deck for this card(Prelate, Egg, Whelp). You gain a 7/7, an 8/8, and then shuffle it back into the deck when it dies.
Dinosize – Great for Prelate and also good with Eggs/Whelps and sometimes even on a lifesteal minion for some healing. Also costs a lot for Shivallah.
Lich King – Good general purpose minion. Replace with anything you feel is better.
Shirvallah, The Tiger – Activates Corpsetaker, Becomes pretty cheap when you play spells during the game, and is overall just a good card.