The Best Mystery Booster Commander Edition Cards for Your 99

The best Mystery Booster Commander Edition card for your 99 is Flitwing, Lyev Detective, a three-mana flyer that turns any token your deck makes into a Clue. Every new card in this set is legendary, which changes the question: not "what is good," but "which legends are better as the 99th card than as the commander."

Mystery Booster Commander Edition has 60 new-to-Magic cards, and all 60 are legendary creatures, planeswalkers, or in one case a sorcery. The ten acorn-stamped Alchemy cards after them are not legal in Commander, and everything past those is a reprint. So a "cards for the 99" list from this set is really a list of commanders worth demoting.

That is not a knock. A legend in the 99 has no commander tax, no color-identity restriction beyond its own cost, and no expectation that it carries the deck. The ranking below rewards cards that do one job well inside an archetype people already play, at a cost that does not warp the curve. If you are looking for the opposite list, the best new commanders in MBC covers the ones that belong in the command zone.

Flitwing, Lyev Detective costs for a 1/1 flyer with one line of text: if you would create tokens, you may create that many Clues instead. The "may" is what makes it a 99 card. Your Treasures stay Treasures when you need mana and become Clues when you need cards, and every creature-token effect in the deck becomes an artifact-count engine at will. Any blue deck that makes tokens and cares about artifacts wants this, and at three mana it never competes with the commander for a turn.

Worzel, the Protector costs and her 0 ability creates a 1/1 Cat with ": Put a loyalty counter on each planeswalker you control." That is a repeatable loyalty source for every walker on your board, not just Worzel, and the −1 digs six cards for a planeswalker or a Plains. In a superfriends shell like our Tam, the Possibility builds, she is a four-mana engine, and the triple white is the only thing keeping her out of every five-color walker deck on sight.

Yume, Chronicler of Valor costs and gives your first spell each turn assist, which lets another player pay some of its generic cost. If they do, you both draw a card. At a four-player table this is a political card first and a value card second: you pick who helps, you pick who gets the card, and the player who keeps paying your mana is a player who wants you alive. Group-hug and pillow-fort decks get a two-drop that makes friends every turn.

Rikala, Homarid King costs for a 0/4 that collects a tide counter each upkeep and resets at four. Your creatures get +1/+0 per counter, and at three or more counters every Island you tap for mana adds an extra . It cycles, so the deck gets a growing anthem for three turns and a mana doubler on the third, then starts over. Any Simic creature deck can run it without building around it, which is the whole point of this list.

Selenia, the Cursed Heart costs for a 2/5 flying lifelink body that doubles all your life gain. When she dies she leaves a Curse on an opponent that doubles their life loss. Orzhov drain decks get a doubler on both ends of the same card, and the death trigger means removal on Selenia still costs the table something. Six mana is the price of admission.

Meatsqueak, Hoard Lord costs and makes a Food whenever another creature dies, once per turn. Squirrels you control get +3/+3 for every seven Foods. Ignore the Squirrel line unless you are already in Squirrels; the first ability alone is a three-mana Food engine for any green aristocrats or Food deck, and it triggers on opponents' creatures dying too. At a four-player table something dies most turns.

Kuroki, Thief of Talents costs for a 4/4 with menace. At your end step, target opponent may draw four cards; if they do, you look at their hand and cast one spell from it for free, and if they refuse Kuroki gets two +1/+1 counters. Either outcome is fine for you, and you choose the target every turn, so this is another card that gets better with three opponents to play against each other. Mono-black midrange gets a five-drop that is never a dead draw.

The Weaver King costs for a 3/6 with shadow, which means almost nothing can block it. On combat damage the player mills that many cards, then you take a creature milled this turn from each opponent's graveyard and put it onto the battlefield under your control. Dimir reanimator and theft decks get a repeatable, hard-to-block source of other people's creatures. It is slow for six mana, but it connects almost every turn.

Nivea, Beloved Battlemage costs for a 3/1. Whenever a creature you control becomes blocked, you may untap it and remove it from combat, which turns every attack into a free attack for a go-wide white deck. The sacrifice ability, for an Akroma, Angel of Wrath token, is a real late-game mana sink, but you are playing her for the first line.

Blor the Impervious costs for a 3/3 with trample, hexproof, and indestructible and no other text. That is the body every Voltron deck that is not green wishes it had: put the Equipment or Auras on Blor and nothing short of exile or a sacrifice effect gets them off. Green decks with a commander that dies too easily get a backup carrier that does not.

Dragon's Smile is a legendary Vehicle, a 4/5 flyer with crew 3 that exiles cards off the top of a player's library equal to the damage it deals and lets you play them that turn, and once per turn lets you cast a spell from exile for . Red impulse-draw decks get a finisher that pays for itself. Tresserhorn's Lord, Returned is the best commander in the set, but in a Grixis sacrifice deck that already runs The Locust God he is also a combo piece: with any free sacrifice outlet, every death draws a card and every draw makes an Insect. The combo page lists that loop with six different outlets, so run your list through the bracket calculator before you sleeve it for a bracket 2 pod.

Six of the eight rulebreaker cards start with an ability that only functions while the card is your commander. In the 99, that line is blank, and most of what is left is thin: Seluma, Light of Aysen becomes a five-mana 4/4 flyer that reanimates an Angel on hit, and Grizzlegom, Hurloon Hero becomes a seven-mana 4/4. The exceptions are Valko Indorian, whose second line gives Phyrexian creatures menace and lifelink in any black deck, and Ekthi, Contaminator Priest, whose living-weapon grant works wherever the Equipment lives. Everyone else, demote at your own risk.

The Future Sight-frame reprint slot is the quiet value in this product. The reprints catalogued so far are mostly mana rocks and format staples: Chromatic Lantern, Fellwar Stone, Mind Stone, Thought Vessel, Swiftfoot Boots, Chaos Warp, Exotic Orchard, Path of Ancestry, Jeweled Amulet, and Dust to Dust. None of them are new to your 99, but the frame is, and a Commander player who opens a box will end up with the rocks every deck wants. The full card list, reprints included, is on the MBC set page.

If you only add one card from this set to an existing deck, make it Flitwing in any blue token list, or Worzel in any walker list. If you want to see which of the 60 legends combo with cards you already own, paste your decklist into the MBC combo page and it will check all 289 of them against your 99.

Then play the games and record them. A card that looks right in a list and a card that wins at your table are two different things, and only the second one is worth the slot. For the rest of our coverage of the set, start at everything we know about Mystery Booster Commander Edition.