So I made a little adjustments and I will clarify:
I aggree with the battleship, as far as I love the design of this card if it would play in rpve I must put shield on it to make it fly faster so I`ve put second ironclad
About T3 I also agree. Avatar of frost is tanky but core dredge can be very powerfull even with T4 units as it will survive longer (because of ranged attacks)
I`m not quite sure about putting construct to this deck. As far as I think it is very powerful card (and I also like it`s design) I`m affraid it is too slow for RPVE. It is great with nether warp spe