Just realized that equipment is a commander card... so do disregaurd the Adaptive Omnitool

I do like your idea with the artifacts, the only thing I would say is that the searchable protection of Shardmage's Rescue would still be viable in the artifact focus build (at least for sideboard) as it is a protection peace that gearhulk can search for along with another card. If OP destroys it while trigger on stack, then you know that you don't need to bother searching for it.

Obviously the deck is still a work in progess since there are more cards to be annouced from the new set, and I think there might be more new artifacts to keep an eye out for. Like a recent spoiler for Adaptive Omnitool.

(2) Equipped creature gets +1/+1 for each artifact you control.

Whenever equipped creature attacks, look at the top 6 cards of your library. You may reveal an artifact from among them and put it into your hand. Put the rest on bottom of library in random order. Equip (3)

Might not be searchable, but perfect for the brute to be equipped with.

Also just realized you could consider using Nurturing Pixie as a searchable creature that you could use to pick gearhulk back up to replay for more triggers. Not too sure how well work, but another card to consider.

Sorry for double Comment. System showed Error when trying to post the first, so I tried to resubmit and it seems it posted twice.

Considering your equipment are both legendary, I am not sure you want to run 4 copies of each. In particualr I do not see the value of 4 copies of Tarrian's Soulcleaver as you are not doing anything that particularly helps this card grow your creatures a significant deal. I think the Basilisk Collar might be a more useful equipment if you wnat a utility equipment, but if you really want the vigilance then I would suggest Kor Halberd as it gives you a +1/+1 by default. Making sure to suggest equipment that are still one drops due to you building around the gearhulk.

Sadly there is not All That Glitters style of card in standard for this idea, but the gearhulk does search for enchantments as well. So cards like Ethereal Armor and Shardmage's Rescue are probably a really good cards to consider for this deck if you decide to shift to enchantment synergies instead of equip. Considering the Gearhulk gets to search 2 cards, the idea of the Shardmage's Rescue seems like a great include as it gives you a protection spell you can search for along with 1 other card. This also means you cna shift into using cards like Optimistic Scavenger as a good 1 drop to search for as well, but that might be a different idea if you want to try that as it would focus more on enchantments.

Lastly you might want to consider Goldvein Hydra. This spell counts as a 1 cost while in deck, meaning that if you can search out this X power vigilance, haste, trample creature at anytime and even get 2 of them so when the first bites it, you can spend all the treasures made from it to power up the second.

Considering your equipment are both legendary, I am not sure you want to run 4 copies of each. In particualr I do not see the value of 4 copies of Tarrian's Soulcleaver as you are not doing anything that particularly helps this card grow your creatures a significant deal. I think the Basilisk Collar might be a more useful equipment if you wnat a utility equipment, but if you really want the vigilance then I would suggest Kor Halberd as it gives you a +1/+1 by default. Making sure to suggest equipment that are still one drops due to you building around the gearhulk.

Sadly there is not All That Glitters style of card in standard for this idea, but the gearhulk does search for enchantments as well. So cards like Ethereal Armor and Shardmage's Rescue are probably a really good cards to consider for this deck if you decide to shift to enchantment synergies instead of equip. Considering the Gearhulk gets to search 2 cards, the idea of the Shardmage's Rescue seems like a great include as it gives you a protection spell you can search for along with 1 other card. This also means you cna shift into using cards like Optimistic Scavenger as a good 1 drop to search for as well, but that might be a different idea if you want to try that as it would focus more on enchantments.

Lastly you might want to consider Goldvein Hydra. This spell counts as a 1 cost while in deck, meaning that if you can search out this X power vigilance, haste, trample creature at anytime and even get 2 of them so when the first bites it, you can spend all the treasures made from it to power up the second.