I have some Un-Rules questions for Truss, Chief Engineer. First: Are First/Second & Once/Twice number words? Second: Can Truss change the Visit requirement for Attractions after you've rolled the Dice? Third: If someone casts Last Chance, and change it to "Take an extra turn after this two", does it counter the spell since it no longer makes sense or does nothing happen? Same question for any card that says "Up to one target card", does Truss stop the card from working by making it say Two?

First: No.Second: No.Third: If the new wording doesn’t make sense, it reverts to the old wording.

Had a discusion with a friend of mine: Will there be Full-Art-Basics (like on Amonkhet) in Ixalan?

No, Ixalan does not have full-art basics. 2017 will give you one last chance to get them though with Unstable.

One minute until midnight as I write this, and my last chance to ask for trivia on the day that is my birthday. So, here goes: Any trivia on doubling effects in general?

I always design doubling effects with the word “double” in the rules text but our templating removes it like 90% of the time.

If you got the go-ahead to do Un-3, would you try and squeeze as much into it as you could on the grounds that it might be years before you got another shot, or would you hold back design space as per standard practice?

I have never held back on Un-designs because I always assume it might be my last chance. Magic will always change enough that there will be new areas to explore.

Where do you stand on Red's "go-for-broke" and how it takes an extra turn but would lose after? Example: Final Fortune; Last Chance; Warrior's Oath

Thumbs up from me.