Aether Vial gaming.I think you're supposed to plot it in order to get the ability. It seems completely unobtainable otherwise.
You can also flicker it at your opponent's end step if you want to commit to not playing anything else on your next turn, or Suspend it if that somehow made it into your cube. But yes, plotting it is by far the easiest.
I'm not really in the market for potentially 2 mana 4/5 flying lifelinkers with a pretty decent floor if you just curve it out normally, but it is a kind of cool design.