Hello Mr Rosewater,
Un-rules question for you:Modular Monstrosity has the ability, "Whenever an opponent casts a spell, you have five seconds to choose a keyword you haven't chosen for a card named Modular Monstrosity today that's been printed on a creature card."There is also a ruling that reads, "If the keyword has a modifier, such as a mana cost or a number, you must choose a modifier that’s been printed."
My question is, can you choose a keyword that has been printed on a creature with a modifier that's only been printed on a noncreature card. Cumulative Upkeep has appeared on many creatures so is a valid keyword. Can I name "Cumulative Upkeep-Add {R}" which has only been seen on the noncreature Braids of Fire?
Thank you in advance

You have to choose a mechanic and a modifier that’s appeared on a creature.

Mark, is the returning noncreature subtype Classes? Because if so, they *did* technically return once, we got Artificer Class in Baldur's Gate as a one-off.

It was. I forgot that one card.

Regarding non-creature artifacts being a commander: this also even exists in not-silver border/acorn. Shorikai, Genesis Engine from Neon Dynasty is a non-creature artifact (its a vehicle so it can become a creature but its default state is not creature)

FYI

Are land still something green Can destroy, and will the color get some of those effects in the future ?

Green is technically allowed to destroy land, but mostly it happens as part of a larger effect, like “destroy target noncreature permanent”.

Did you guys use Freerunning instead of Prowl because you could put it on noncreature, non-Kindred cards? Would you consider it a "fixed" Prowl?Personally I like the open-endedness of Prowl. I feel like Freerunning forces you to rename the mechanic every time you want to use it with a different creature type, which could get pretty silly pretty quickly. I don't want to live in the future where we have several nigh-identical mechanics that do basically the same thing but all have different names. But I do understand why you guys want to avoid using Kindred.This is a tangent, but let me ask: Why was Prowl's first outing mostly only put on Rogue cards, when it was worded to work with any variety of creature types?

Because it was designed as a Rogue mechanic in Morningtide that had a class typal theme.

Slickshot Show-Off really didn't need +2/+0 for every noncreature spell for being a cheap creature with flying and haste. And what happened to abilities triggering only once each turn? This is ridiculous. Just give cheap creatures prowess and give something like this to more costlier creatures. We're past the Phyrexian arc, can we get back to a level of normalcy please?

It’s a rare costed for constructed formats. It gets to be very good in limited.

Re: Kindred vs not in MH3, looking at all of the Eldrazi-related non-creatures, the ones with Devoid aren't Kindred and the ones with Kindred are "naturally" colorless and lack Devoid. So that appears to be the dividing line - Devoid cards aren't also Kindred Eldrazi because Devoid itself is associated with the Eldrazi, while non-Devoid colorless cards related to Eldrazi are so it's explicit.

Yes, it appears the non-creature, non-Devoid colorless cards that are Eldrazi theme are Kindred _______ - Eldrazi.

When you say typal means "related to a type" does this only include creature types? Or would themes related to a supertype, card type, or non-creature subtype count as typal as well? (The confusion comes from the word "type", like the old "tribal", having multiple meanings in Magic.)

Technically, a card mechanically caring about any card type, supertype, or subtype can be referred to as typal.

Would something that was restricted to "you cast a noncreature permanent spell" be closer to a 'fixed' prowess?

I’m not sure there’s a reason to fix prowess.

Hi Mark. Although an evergreen keyword between Red and Blue on permanents seems unlikely at this point (Prowess now being deciduous), has an evergreen keyword between Red and Blue on Sorceries/Instants (or just any noncreature) been considered?

It’s not where we need the overlap.