Eternal Masters is a large set with 101 commons, 80 uncommons, 53 rares, and 15 mythic rares. This is the normal size for a large set of this era. Every pack contains a foil card. The set was printed in the USA.
Eternal Masters was sold in 15 card booster packs (which contain an additional ad card). Booster boxes have 24 packs.
Packs have back-facing cards with common-uncommon-rare ordering followed by a foil card and ad card.
1 Ad Card
Packs are evenly split between C1 commons and C2 commons. C1 packs will contain 2×A + 2×B + 6×C or 3×A + 2×B + 5×C. C2 packs will contains 4×A + 2×B + 4×C or 4×A + 3×B + 3×C.
There are two uncommon runs, A and B, each with 40 different cards appearing three times each. Half of packs have two A cards followed by a B, and half have one A card followed by two B cards.
In the foil slot, commons appear 5/7 of the time, uncommons appear 3/14 of the time, and rares (or mythic rares) appear 1/14 of the time.
The A common run consists of 33 different cards each appearing twice. The cards alternate between white, black, and red. The choice of first card is mostly arbitrary.
The B common run consists of 22 different cards each appearing three times. The cards alternate between blue and green. The choice of first card is mostly arbitrary.
The C1 common run consists of 27 different cards each appearing twice plus Tranquil Cove, the short-printed common. The choice of first card is mostly arbitrary.
The C2 common run consists of 18 different cards each appearing three times plus Tranquil Cove, the short-printed common. The choice of first card is mostly arbitrary.
The A uncommon run consists of 40 different cards each appearing three times. The choice of first card is mostly arbitrary.
The B uncommon run also consists of 40 different cards each appearing three times. The choice of first card is mostly arbitrary.
All of the marketing cards in Eternal Masters have a token or emblem on the front face. They are printed on an 11 × 11 sheet with different items appearing different numbers of times.
The backs of these cards contain messages: the proclamations of Marchesa and Adriana as previews of Conspiracy: Take the Crown. These pieces of these messages are written on the boundaries between the tokens. Marchesa's message is written along the horizontal boundaries, and Adriana's message is written along the vertical boundaries. These messages were used to assemble the token sheet layout, so the back of token sheet is known (although, as far as I can tell, the corresponding fronts were never published).  This has been used to align the sheet, although most of the observations are separate, so it's possible there is a mismatch caused by undetected transpositions.
Each message is broken into 110 pieces. Here, those pieces are reproduced in logical order of the text. This means left and right are reversed relative to the orderings given above (because these appear on the backs of the cards). Marchesa's message, then, starts at the top right and proceeds right to left, then row by row. Adriana's message starts at the bottom right and proceed bottom to top, the column by column. For example, the first part of Marchesa's message appears between the top right Elephant token and the token below it (numbered 11 and 22). Each part of the messages ends with a special symbol. In Marchesa's message, the symbol is her rose icon. In Adriana's message, the symbol is the "Custodi symbol."
Proclamation by Queen Marchesa
PEOPLE OF THE HIGH CITY! §
IT IS MY SOLEMN DUTY
TO INFORM YOU THAT
BRAGO, KING OF PALIANO,
IS NO MORE. HIS DEATH
SHOCKED THE CITY ALL
THOSE YEARS AGO; HIS
BROUGHT JOY AND RELIEF
TO US ALL. NOW, HE HAS
AT LAST PASSED TRULY
AND FOREVER BEYOND
THE VEIL, HIS LONG
REIGN HAS COME TO AN
END, AND HIS SPIRIT
IS FINALLY GRANTED
THE ETERNAL REST
IT DESERVES. §
IN HIS BENEFICENT
WISDOM, OUR LATE KING
APPOINTED A SUCCESSOR
WITH THE WILL AND THE
STRENGTH TO BRING
PEACE TO HIS BELOVED
CITY. AS HIS DESIGNATED
HEIR, RECOGNIZED BY
THE SACRED ORDER OF
CUSTODI AS HIS ONE AND
TRUE SUCCESSOR, I VOW
TO UPHOLD THE LAWS OF
PALIANO, TO MAINTAIN
ORDER IN THE CITY, AND
TO SEE THAT JUSTICE
IS SERVED SWIFTLY
THOUGH I KNOW THAT I
WILL NEVER BE A WORTHY
HEIR TO A MAN WHOSE
COMMITMENT TO HIS
LIFE ITSELF, I MUST
HOPE THAT, WITH THE
BLESSINGS OF THE
CUSTODI, I AM ABLE TO
GUIDE OUR FAIR CITY
TO A NEW AGE
OF PROSPERITY. §
THE TRANSFER OF POWER
IS ALWAYS DIFFICULT,
AND ALL THE MORE
SO WHEN THE END OF
A MONARCH'S REIGN
EVEN LOYAL AND
STEADFAST SERVANTS OF
MAY FIND THEMSELVES
ILL-EQUIPPED TO SERVE
A NEW MONARCH IN
THE SAME CAPACITY AS
THE OLD. AS OF NOW,
THE POST OF CAPTAIN
OF THE GUARD
IS DISBANDED. THE
SOLDIERS OF THIS CITY
WILL NOW REPORT
DIRECTLY TO ME.
THE FORMER CAPTAIN
HAS RETIRED WITH THANKS
FROM OUR FAIR CITY AND
A GENEROUS PENSION
FROM THE THRONE THAT
WILL SUPPORT HER FOR
THE REST OF HER LIFE,
HOWEVER LONG THAT
LIFE MAY BE. §
IN THE ABSENCE OF ANY
NATURAL HEIR, BRAGO
MADE HIS INTENTIONS
FOR THE DISPOSITION
OF HIS THRONE QUITE
NOT ALL OF THE KING'S
FORMER VASSALS RESPECT
HIS FINAL WISHES.
THOSE WHO MIGHT USE
THIS TRANSITION AS AN
EXCUSE FOR REBELLION
SHOULD KNOW THAT
TREASON WILL BE
ANSWERED, AS IT ALWAYS
HAS BEEN, WITH THE
WHILE LOYALTY WILL BE
MAY FORTUNE SMILE
UPON PALIANO! §
—AS PROCLAIMED BY
HER MAJESTY QUEEN
MARCHESA, THE BLACK ROSE,
FIRST OF HER NAME;
HEAD OF THE COUNCIL,
GUARANTOR OF LAWFUL
SOVEREIGN OF THE
HIGH CITY, TRUE HEIR
TO THE THRONE
OF PALIANO AND
ALL THE RIGHTS AND
PRIVILEGES THEREOF §
Proclamation by Adriana, Captain of the Guard
FREE CITIZENS OF PALIANO: §
WHEN YOU FELL ASLEEP LAST NIGHT,
YOU WERE LOYAL. YOU LAID DOWN YOUR
HEADS AS STEADFAST SERVANTS OF THE
ONE TRUE KING OF PALIANO,
BRAGO THE ETERNAL. PERHAPS YOU DID
NOT LOVE HIM. IT IS NOT THE ROLE OF
A RULER TO BE LOVED. BUT YOU OBEYED
HIM, AND YOU RESPECTED HIM,
AS ANY CITIZEN SHOULD. §
YOU AWAKENED AS UNWITTING TRAITORS
BENEATH THE BLOODSTAINED BANNER
OF A USURPER QUEEN: MARCHESA, THE
BLACK ROSE, A KNOWN ASSASSIN AND
PLOTTER, A CRIMINAL OF THE HIGHEST
ORDER WHOSE VEILED THREATS AND HIDDEN
THORNS HAVE ALLOWED HER FOR FAR TOO
LONG TO FLAUNT THE LAW OF PALIANO.
SHE HAS MADE YOU TRAITORS BY
RAISING HER FLAG ABOVE THE PALACE
AND PLACING THE CROWN UPON HER
TREACHEROUS BROW. SHE HAS FORCED
YOU TO CHOOSE BETWEEN LOYALTY TO
THE CROWN AND LOYALTY TO YOUR CITY. §
SOMEHOW, THIS VILE DECEIVER
MURDERED KING BRAGO, ENDING HIS
IMMORTAL EXISTENCE AND DISPERSING
THE ESSENCE OF HIS SPIRIT. SOMEHOW,
SHE INSERTED HERSELF INTO THE
SOVEREIGN'S WILL AND TESTAMENT—
A DOCUMENT FORGED, NO DOUBT, FROM
WHOLE CLOTH, FOR WHY WOULD THE
KING ETERNAL HAVE A WILL AT ALL?
AND IF HE DID, WHY WOULD HE NAME THE
MURDEROUS DAUGHTER OF A FALLEN
HOUSE TO RULE IN HIS PLACE? SOMEHOW,
SHE COMMANDS THE LOYALTY OF THE
CUSTODI PRIESTS WHO ONCE MADE THE
KING'S WORD MANIFEST IN THE WORLD.
ALONGSIDE THEM STAND NUMEROUS
SERVANTS OF THE THRONE WHO CANNOT OR
DARE NOT QUESTION HER RIGHT TO RULE,
AND IN THE SHADOWS LURKS HER OWN EXISTING
NETWORK OF THIEVES, SPIES, SABOTEURS,
INFORMANTS, AND ASSASSINS. §
ALREADY, THE FALSE QUEEN RAISES HER
OWN SIGIL, THE EMBLEM OF THE BLACK
ROSE, ABOVE PALIANO. SHE WOULD
QUIETLY IGNORE THE SYMBOL OF OUR
CITY, THE SYMBOL BRAGO CARRIED WITH
HIM ON THE POMMEL OF HIS OWN SWORD,
AN IMAGE SO ENDURING, SO EMBLEMATIC
OF OUR CITY AND ITS LAWFUL RULER
THAT THE CUSTODI CONSIDER IT
A RELIGIOUS ICON IN ITS OWN RIGHT.
OH, THE CUSTODI WAVE IT EVEN NOW, AND IT
MEANS AS LITTLE FROM THEM AS IT EVER DID.
BUT THE BANNERS OF THE CITY TROOPS
HAVE ALREADY CHANGED. YOU WILL NOT
SEE THAT SYMBOL IN THE HALLS OF
MARCHESA'S PALACE OR ON THE SHIELDS OF
HER DEFENDERS. SHE CLAIMS TO RULE
LEGITIMATELY, TO HAVE THE INTERESTS
OF THE CITY AT HEART, BUT THE FLAG
THAT HAS FLOWN ABOVE US ALL THESE
YEARS IS ABSENT AT HER OWN COMMAND. §
AND WHY? THE REASON IS SIMPLE.
MARCHESA HAS NO RIGHT TO THAT SIGN
OF OUR CITY'S HISTORY, AND SHE KNOWS
IT. SHE WEARS THE CROWN AND SITS
UPON THE THRONE, BUT SHE DOES NOT
CARRY THE SWORD OF BRAGO—
THE BLADE THAT BEARS THE SYMBOL OF OUR
CITY. I KNOW THIS BECAUSE I NOW CARRY
THAT SWORD, AND WITH IT THE BURDEN
OF UPHOLDING LAW AND ORDER IN
PALIANO. I HAVE BEEN STRIPPED OF MY
TITLE BY THE TRAITOR QUEEN, BUT I DO
NOT RELINQUISH IT. I HOLD THIS SWORD,
THIS SYMBOL, THIS DUTY TO DEFEND OUR
CITY FROM ALL ITS ENEMIES—
EVEN AND ESPECIALLY AN ENEMY WHO
SITS UPON THE THRONE. I HAVE NO WISH
TO RULE, ONLY TO UNSEAT THE USURPER
SO THAT WE MAY DETERMINE OUR
RIGHTFUL SOVEREIGN IN THE WAKE OF
KING BRAGO'S TRAGIC END. §
MARCHESA WOULD HAVE YOU STAND WITH
HER, IN SERVICE TO A TRUE CROWN THAT
RESTS UPON A FALSE HEAD, AND THEREBY
SHE WOULD MAKE YOU A TRAITOR.
I OFFER YOU A DIFFERENT PATH: STAND
WITH ME, AND WITH BRAGO, AND SHOW
YOUR LOYALTY TO YOUR CITY THROUGH
YOUR DISOBEDIENCE TO THE PRETENDER. §
IF HER FLAG IS NOT YOUR FLAG, THEN
DO NOT BOW TO IT. IF HER RULE IS
ILLEGITIMATE, THEN SO TOO ARE HER
LAWS. IF SHE IS NOT TRULY QUEEN, THEN
THE SERVANTS OF THE THRONE ARE NO
BETTER THAN HER SPIES AND ASSASSINS,
AND SHOULD BE TREATED ACCORDINGLY. §
WHAT SAY YOU, CITIZENS OF PALIANO?
DO YOU STAND WITH THE CITY, OR WITH
ITS SELF-PROCLAIMED QUEEN? ARE YOU
LOYAL REBELS, OR OBEDIENT TRAITORS?
EVERY DAY, AS LONG AS MARCHESA SITS
UPON THE THRONE, YOU ARE ONE OR THE
OTHER. MAKE YOUR CHOICE! §
—ADRIANA, CAPTAIN OF THE GUARD §
Foil Common Sheet
There is a picture of the foil common sheet available.  Each common card appears once. The extra copies of Pilgrim's Eye are presumed to be fillers.
Foil Uncommon Sheet
There is a picture of the foil uncommon sheet available.  Each uncommon card appears once. The extra copies of War Priest of Thune are presumed to be fillers.
Foil Rare Sheet
There is a picture of the foil rare sheet available.  Each rare card appears twice, and each mythic rare card appears once.
 This article from manaleak.com has pictures of the token backs (and links to a reddit source with close-up pictures of most of the token backs). The official text of the Marchesa and Adriana proclamations is on the Wizards site. (The text differs slightly from the text on the tokens.)
 A picture of the foil common sheet was posted in the Misprints facebook group by George Worshop.
 A picture of the foil uncommon sheet was posted in the Misprints facebook group by Roberto Esposito.
 A picture of the foil rare sheet was posted on Twitter by Cascade Games.