I'm not really satisfied with my changes. I feel I might have dissolved to much of the original flavor maybe, IDK. I'm going to go back to GoA's original build and play a dozen or so games again.
I am intruded by a different variation I have in my head though. I think that it's possible that the ramp is not needed. We're only trying to get to 6. Maybe we could have more success by cheating them out, instead of thinning the deck and digging.
Eldritch Evolution is the card that was the seed for this weed in my head. Unfortunately
Filigree Familiar can only get us the Verdurous variety of gearhulks. We need a staple 4cmc card that plays well with the rest of the deck to fetch our more desired Torrential and Combustible versions.
Guardian Automaton is both fodder for Eldritch and a possible Artistry target if we can't find the other pieces. Guardian also adds more lifegain synergy along side Familiar and Pulse. As far as backup Artistry target's go I like
Snare Thopter better. It has more game winning potential. Making a 9 point, hasty, flying attack has potential. If we start adding these other artifacts creatures, does Chief of the Foundry, even as a 1 or 2 of, start to look like a solid add?
I searched R/G/B and Artifact for any 4cmc creature that gives value as it leaves play or dies but couldn't find one. I was also thinking there was something in blue that would help dig for artifacts (gearhulks) but couldn't find anything either. Is there anything else that would act like a third or fourth Eldritch Evolution?
Edit: There's definitely not room for Chief of the Foundry. However;
Treasure Keeper might be the 4-drop I'm looking for.