Pachirisu CL has a Pok-power, Self-Generation, that allows you to attach 2 Energy to it when you play it from your hand to the Bench
The direct design homages are limited to just a couple of cards instead of going all in on artifacts, like Antiquities
If an effect modifies a creature's power without setting it, that is not included when determining its base power
Rahns ability to make the impossible seem authentic is unparalleled
As an example or three, Cloudstone Curio will let you bounce one of your things when a nonartifact enters play under your control, Genesis Chamber makes a fresh Myr token whenever a nontoken creature enters play (though this is a fully-symmetrical effect, it benefits you more than anyone else while Norin is in play), and, of course, we have Panharmonicon to double all of the enters-the-battlefield effects we have at our disposal