I guess the main goal would be to pump out big creatures, I think I'm gonna try and pick up 4 Ensoul Artifact and replace the Tezzeret's Touch and stick with red/blue

So first up, consistancy is pretty key. You should be playing 4 copies of Seat of the Synod, Great Furnace and at least 2 of Darksteel Citadel. For other lands, something like Spire of Industry is solid, or fastlands or duals or whatever.

Then 4 Frogmite and 4 Myr Enforcer. Big cheap dudes. Think of the artifact lands as tapping for 2 to pay for them. You can also probably do something with Scale of Chiss-Goria/Tooth of Chiss-Goria as enablers for Metalwork Colossus.

Serpant seems fine. Back the deck up with Galvanic Blast, Ensoul Artifact, Thoughtcast and Cranial Plating and you got a deck.

Thanks for the advice! I will definitely be getting 4-ofs for the artifact lands, do you think something like Inventors' Fair would be useful? I'll try out more of the other cards you mentioned as well, obtaining cards shouldn't be as much of a problem now bc I found a new card shop with more stock :P

The question is "do you want a 5 mana tutor for an artifact" or a drip gain of life compared to Tomb of the Spirit Dragon?