The new egg card in Paladin -- Mechano-Egg -- can easily turn into a serious threat with the help of Magnetic mechs and Spikeridged Steed. When it pops it puts an 8/8 mech on board for five mana, and that is a great deal.
The good old Stonehill Defender can find you more mechs with Taunt, and Cobalt Scalebane and Fungalmancer will keep buffing them on board. The infamous Equality/Consecration combo is also here for some control gameplay.
If you can afford to put in Meatwagon, which is an epic card, then it will also be easier for you to summon Mechano-Egg from your deck. But it isn't essential, and the deck works just fine as is.