Give them back
Artifact card draw is the same as any other type of card draw
With Rionya, you can just send the token in, and if it dies to a blocker, you can just send another at the beginning of the next combat phase, infinitely
Then, once you add Blink/Flicker cards like Ephemerate, Teleportation Circle, or Eerie Interlude, you can start reusing your best ETB effects repeatedly, doubling them every time and slowly burying the table in value
This black and green 1/2 has three powerful abilities you can use in a lot of decks
7 Mishra's Factory (Summer) Rare - $79.08 Antiquities did something a little bit different with this release, several Magic cards had different illustrations on them, sometimes depicting a change in seasons, while other themes might depict a structure from different perspectives