• A double-faced token (one that transforms): Templating sounds like it'll be wordy e,g. "Create a 1/1 black Phyrexian creature with "B: Transform this creature" that transforms into a 3/3 black Phyrexian Horror creature."

• A card that costs XUUUU: More efficient Mass Manipulation?

• A legendary creature returns not seen since Homelands: Irini Sengir? AFAIK all the other immortals have had reprints, and I could see her teaming up with Daughter of Autumn. For reference. (A much better idea: Vampire Chandler)

• Two draft archetypes that have a creature type matters component (one of which is Phyrexians - see above): Angel?

• The tenth _ & ___ sword: Blue & Black. I was thinking "Oil and Water", but the naming scheme for the ally-colored Swords tend to be complementary rather than contrasting. Dunno either what mechanics they'll use, most seem to have been snatched by the rest.

Next, here are some rules text that will be showing up on cards:

• “You may cast spells with flash or flying from the top of your library.”: Some blue-inclusive pairing, can't think of which tho.

• “where X is the excess damage dealt this way.”

• “This spell can’t be copied.”: AFAIK stuff like Isochron Scepter and Mizzix's Mastery can still copy it while it's a card outside of the stack

• “Each player can’t cast more than one non-Phyrexian spell each turn.”: Not a fan of this, feels situationally bad.

• “Whenever a permanent you control transforms or a permanent enters the battlefield under your control transformed,”: Hoping Tovolar  ^Flip will be able to use this.

• “If the opponent protects it, remove a defense counter from it.”: Guessing this is for a Battle card and that it's indeed something Monarch-like.

• “At the beginning of your upkeep, if you haven’t been dealt combat damage since your last turn, you draw a card and you lose 1 life.”: Interesting seeing as the last set had Phyrexian Arena.

Finally, here are some Phyrexians in the set:

• Creature – Phyrexian Bear Rhino: Ikoria-based

• Creature – Phyrexian Devil: Innistrad-based, I hope. Would be funny since then it'd be Norn-ish.

• Creature – Phyrexian Dog Warrior: Tarkir-based

• Creature – Phyrexian Jackal: Jackal Pup reference? Otherwise you could go with Amonketh, although the lack of class makes me doubtful.

• Creature – Phyrexian Shark: Mmmm yess

And some creature type lines of denizens fighting them:

• Creature – Raccoon Warrior: Capenna-based

• Creature – Goblin Spellshaper: no idea what it'll Spellshape

• Creature – Wolverine Dinosaur: Again, Ikoria.

• Legendary Creature – Elder Giant Dog: As pointed out, Kroxa + Kunoros

• Legendary Creature – Ape Dinosaur Turtle: Kogla + Yidaro, Wandering Monster. Feels kinda weird since they don't seem like very natural enemies?

The One Ring: Eye of Vecna on steroids, which is pretty fitting. A serious consideration for mono-white life gain decks; cast it for four mana, tap it to draw one, pass, then tap it on your next turn again to draw two more. That's like a slow Concentrate, which isn't bad at all (and that's not even getting into tapping it more times). The ETB Progenitus-protection means it's not a bad late-game topdeck either.

Gandalf the Grey: Yeah, I feel white-blue would have been more appropriate flavorfully? He's a good guy yet also a trickster. Also even though he's the become the standard model for wizards, IIRC Gandalf doesn't actually cast much, in part because AFAIK doing magic in LOTR permanently drains your power. Also, the topdeck ability gives me anxiety thinking about stuff like Portent.

Sam, Loyal Attendant: Gingerbrute and Golden Egg can now be activated for free. (Please try to contain your excitment.) Anyway, seeing as the "Food and Fellowship" precon is WBG, I'm guessing Frodo will be WB and have some sort of life payment to take advantage of the cheap meals? (Also, I feel Frodo was more dutiful than Adventurous.)

Radagast, Wizard of Wilds: I was going to complain about Istari color philosophy again because I feel Radagast is mono-green, or even red-green considering how he kinda irresponsibly and eccentrically abandons his mission, but turns out his real name literally means "Friend to birds", so I'll have to give this a pass.

Reprieve: Overall better than Remand since it pierces "Can't be countered", and also Lapse of Certainty even if it permits faster recasts. How long do we have to wait for a white Delay tho?

Gollum, Patient Plotter: You know, he just looks like a Shadowmoore kithkin, if a bit old and underdressed.

Mount Doom: Actually sacrifing the One Ring to relieve the life loss burden is for wusses. Gogo Ugin's Nexus or Helvault for profit!

Samwise the Stouthearted: IDK why they didn't just template it as "return up to one target permanent..."? Anyway, Ring temptation is as intriguing as it is vague.

Frodo, Sauron's Bane: I don't really feel like Frodo leveled up much, especially in comparsion to the other hobbits. And he kinda didn't end up being the Bane of big daddy S seeing as he fell to tempation at the end (while Gollum just plain fell).

Tom Bombadil: Kind of unsure if the second ability leaves a window of vulnerability where the first ability isn't active? Anyway, Read Ahead-Sagas seem pretty good here.

Sauron, the Lidless Eye: Kind of dissapointing in both flavor and mechanics. I feel he's philosophically more mono-black in LOTR, while his old self was more UBR. ETB Threaten isn't all that exciting either.

Aragorn and Arwen: I'm not generally against race bending, but in this case I can't help but think of the black numenorans . Anyway, the card's actual abilities are OK at six mana.