Creature types have been around since Wizards of the Coast printed the very first set of Magic cards, Limited Edition Alpha
From Mana Rocks such as Gilded Lotus and Thran Dynamo to card flow like Mind's Eye or Skullclamp to win cons like Blightsteel Colossus and others, all you have to do is have three differently named artifact tokens, like the ones made or Treasure, the 1/1 colorless artifact Gnomes in this set, Powerstones, Junk, Gold, Constructs, the above card, loads more
Activate Karn and deploy your artifacts in one turn before discard spells can take them away
On eBay , it will cost you close to $200 for a World Championship Gaea's Cradle, which is less than you'd pay for a tournament-playable copy for sure but also a ton to pay for a card that is explicitly not legal for tournament play
Given the structure of the deck, which is completely consecrated to resolving a few copies of Crashing Footfalls, however, the card really is a house