Other interesting Magic actions rooted in these early Alpha, Beta, and Unlimited sets include looking at your opponents hand (Glasses of Urza), having an infinite hand size (Library of Leng), and casting modal spells (Healing Salve)
However, in more powerful pods, that kind of thing is happening all the time, and being able to both create treasures and draw cards with this enchantment is going to feel great
Jace sets you up well while getting you value, he bounces their things and restores your tempo and he locks people out of the game by denying them relevant draws
While X sadly cannot be 0 here, the or less clause is a nice inclusion allowing Thieving Skydiver to be kicked for 1 and still steal powerful, zero-mana artifacts such as Stonecoil Serpent, Hangarback Walker, and Mox Amber