Turn 2: Attack with a Hero, play a Plains, cast two more Heroes (opponent at 19 life)
Jim Hawkins, Space Traveler looks to full capitalise on the new mechanic with a great way to cheat out your more expensive locations via his This Is It
That said, it would expedite the decks clock by a good few turns, depending on how much you tune it
If Warehouse Tabby leaves the battlefield while it has an Aura you control attached to it or at the same time as another creature with an Aura you control attached to it, its ability won't trigger for those enchantments unless they were destroyed by the same effect that caused Warehouse Tabby to leave the battlefield
Whether its an evolution of one the brews Ive written about or something else entirely, I cant wait to be a part of the unveiling of the Kaladesh Standard format.
Even at 3 ink, uninkable, and not being a song, this could be under-costed