Here's where things get tricky
Splinter, the Mentor Splinter, the Mentor ensures your nontoken creatures result in at least a fresh artifact token, and the partner capability makes it a joy to build around
This time our newest Old School additions are a Jihad (GD) and two Juzam Djinn (PL - GD) from Arabian Nights as well as three Antiquities : Candelabra of Tawnos (PL), Power Artifact (PL), the good old Mishra's Workshop (GD) and different Mishra's Factory (Version 1, 2 and 3 in various conditions)
In reality, however, it may not be the strongest strategy you can employ
Equip variants or equip abilities with restrictions, like the "equip legendary creature" ability of Wrecking Ball Arm, are still equip abilities, and their costs will be reduced by Cloud's last ability
Callous Oppressor (Onslaught/Legions/Scourge) Onslaught was the tribal block, so creature type mattered a lot