Thinking about the potential here may be a tad optimistic, but it gets my Timmy heart pounding
Once you reach the phase of the game where you can afford to do multiple things per turn, you need card draw to ensure you keep having things to do (Circle of Power, Fight On!, Travel the Overworld) or at least cards which can be used multiple times (flashback spells, Ring of the Lucii, Shambling Cieth, Relentless X-ATM092)
Sensei's Divining Top Another artifact that got itself banned from Modern and Legacy, Sensei's Divining Top goes infinite with just about anything that has a Magic logo on its back
Enchantments - 11
It is a surprisingly broadly playable card
I could easily imagine moving it to the maindeck, and depending on the shape of the format, its not even clear we couldnt play multiples