For Challenge # 035. The rule I'm changing in Magic right now is "What if card text shut off when a permanent is tapped?". Here we get to see a card play off of permanents in play in a manner similar to the way Imprint works, without forcing exile in the process. Originally, this artifact was slated to tap to do what it did, but, well, that wasn't going to work. So, I gave it Persistence, so the card could use tap abilities on other artifacts without fear. I was already planning on putting Persistence on another card, since I assumed that in a world where tapped permanents are shut off, eventually Persistence would be come keywordable in the same way that Hexproof or Reach became necessities.