Hello Mark, I'd like to invoke ancient rite of birthday trivia ;) Imagine you could add one mechanic from Acorn to Premiere - no question asked by Play/Set Design. What would you add and why?

Booster tutor. It’s one of my favorite Un effects.

For Vorthos naming Urza, does Booster Tutor with it's flavor text mentioning the set Urza's Saga count as an Urza card?

Yes.

I know we're all on unfinity now, but I have an Unhinged/Unsanctioned question: If I Booster Tutor a pack of Double Masters 2022, add the Cryptic Spires to my hand, then play it, what mana can I add? Is there any point at which I can circle mana symbols on the Cryptic Spires?

You circle the mana when it enters the game.

What happens if I cast Booster Tutor but don’t have a booster pack available?

Nothing. You fail to find the booster.

You mention there each player casts Booster Tutor is played while Hive Mind is in play - what happens if the other players don't you know, have a booster? Seems like that could create a bad time with people feeling like they might need to buy one or other stuff there

If someone doesn’t have the ability to get a booster (and no one else can lend them one), they don’t open a booster. In a casual game, you could let someone get the remnants of someone else’s booster.

Hi Mark. Un-Rules question here. For the purposes of Booster Tutor, Stocking Tiger, and Summon the Pack, which of the following can be used as a "sealed Magic booster pack": a set booster, a collector booster, a theme booster, a themed prerelease booster (e.g. the special booster inside of a Strixhaven prerelease pack for one of the Colleges), a promo pack/foil promo pack, a prerelease promo foil in its wrapper, a box topper, a buy-a-box promo, and a Secret Lair.

The short answer is it has to be a “booster pack”Set booster? Yes, it’s a booster.Collector booster? Yes, it’s a booster.Theme booster? Yes, it’s a booster.Themed prerelease booster? Yes, it’s a booster.Promo pack? No, it’s not a booster.Prerelease promo? No, it’s not a booster.Box topper? No, it’s not a booster.Buy-a-Box promo? No, it’s not a booster.

What makes a card designed for cube? What's the difference with a card designed for limited (draft) in general?

There are some things that Cubes in general like to do that are outside the realms of normal limited effects. Booster Tutor would be a good example.

Ok, here goes for an un-mander question: are Booster Tutor and Summon the Pack subject to Rule 11? "Abilities which bring other card(s) you own from outside the game into the game (such as Living Wish; Spawnsire of Ulamog; Karn, the Great Creator) do not function in Commander." Do cards from boosters count as "outside the game?" Because they sure aren't in your sideboard.

You’re already breaking a rule to play silver border cards, so if you’re allowed to have it in your deck, you’re allowed to get the booster.

Uncle Mark, I noticed that the new Booster Tutor has the word "Magic" italicized rather than bolded as it has historically been. Is this a change in style, an oversight, or just an error on the render?

It’s been italicized instead of bolded for at least the last decade, possibly longer.

FYI, Booster Tutor is the most popular card in cubes by a large margin.

Possibly. Any other candidates?