Marnie's Grimmsnarl ex / Froslass deck: the core, the flex slots, and what beats it

What this deck looks like when you open the box

Across the 20 lists we counted, this deck runs 19 to 23 Pokémon, 28 to 32 Trainers and 8 to 10 Energy. Its attacks are paid for in Darkness, Water and Psychic.

Limitless files it under « grimmsnarl-froslass », and that is the label you will see on results pages and on stream. Every card named in it turns up in the core below, which is what makes it a fair name for the deck.

Look at the Energy count first: 8 to 10 out of 60. No single number tells you more about how a deck breathes. A lot of Energy means it wants to load up one big Pokémon and swing hard. Very little means it lives on cheap attacks and on Trainers to dig out whatever it is missing.

It takes a while to set up. Marnie's Grimmsnarl ex is a Stage 2 Pokémon: you put down the baby, you evolve it, and then you evolve it again. Three cards stacked before anything attacks. That is what the hardest-hitting decks cost you, and it is also where they crack — a fast opponent can bury you before the line is standing.

On the Trainer side: 8 to 13 Supporters, 12 to 17 Items, 1 to 2 Tools and 3 to 4 Stadiums. Worth saying out loud, because everyone forgets it once a tournament: you only get ONE Supporter a turn, while you can chain as many Items as you like. So a deck full of Items takes longer, louder turns than a deck full of Supporters.

How it actually wins

Marnie's Grimmsnarl ex attacks with Shadow Bullet for 180, and it costs 2 Energy (Darkness and Darkness). It has 320 HP to absorb the answer. Everything else in the list is built around getting that card online.

Do the arithmetic with us, because it decides your first few turns. You attach one Energy a turn by hand. Marnie's Grimmsnarl ex wants 2. With no help, that means you swing on turn 2 at the earliest. Every card in this deck that accelerates Energy or fetches a Pokémon buys back a turn on that count, and at this level a turn is a game.

Here is the detail that quietly loses games: Marnie's Grimmsnarl ex has a Retreat Cost of 2. Once it is in the Active spot you are not getting it back to the Bench cheaply. Think before you send it up.

1 of the core Pokémon carry the « ex » suffix. Those are the big ones: high HP, attacks that hurt, and the price tag to match. They also cost you more when they fall — an opponent takes extra Prize cards for knocking out an ex, so every trade you lose there walks you towards the loss faster than you think.

The attackers in the deck's core, with their best attack, its cost and their Weakness

Pokémon	HP	Attack	Damage	Cost	Weakness	Retreat
Marnie's Grimmsnarl exStage 2	320	Shadow Bullet	180	Darkness + Darkness	Grass ×2	2
FroslassStage 1	90	Frost Smash	60	Water + Colorless	Metal ×2	1
Marnie's MorgremStage 1	100	Corkscrew Punch	60	Darkness + Darkness	Grass ×2	1
MunkidoriBasic	110	Mind Bend	60	Psychic + Colorless	Darkness ×2	1

The core: the 16 cards every list runs

These 16 cards appear in all 20 lists, without a single exception. That is 51 of the 60 slots. The other 9 are decided player by player.

This is the most useful table on the page, and nobody publishes it. Everywhere else you get one list, from one player, who won one tournament. Fine — but you have no way of telling which parts of it were the deck and which parts were that person's idea on the day. Counting 20 lists settles the question by itself: what 20 people put in their deck without talking to each other IS the deck.

A word on the count column. We give you the number that comes up most often, and where the lists disagree we give you the range instead. A card sitting at "3 to 4" is one everybody plays but whose fourth copy is up for debate. That is exactly the kind of slot you reclaim when you want to fit an idea of your own.

The code next to the name — "TWM 130" and the like — is the set and the collector number, printed at the bottom of the card. We show you the printing the lists use most often, because two cards can share a name and have completely different attacks. Check that number before you buy anything.

The cards present in every list counted, with the number of copies

Copies	Card	Printing	Kind	Rotation
3–4	Marnie's Impidimp	DRI 134	Pokémon	stays
3–4	Munkidori	TWM 95	Pokémon	leaves
2–3	Froslass	TWM 53	Pokémon	leaves
2–3	Marnie's Grimmsnarl ex	DRI 136	Pokémon	stays
2–3	Snorunt	ASC 46	Pokémon	stays
1–2	Budew	ASC 16	Pokémon	leaves
2–3	Marnie's Morgrem	DRI 135	Pokémon	stays
4	Lillie's Determination	MEG 119	Trainer	stays
4	Poké Pad	POR 81	Trainer	stays
3–4	Spikemuth Gym	DRI 169	Trainer	stays
2–3	Boss's Orders	MEG 114	Trainer	stays
2–3	Buddy-Buddy Poffin	TEF 144	Trainer	leaves
2–3	Night Stretcher	ASC 196	Trainer	leaves
1	Air Balloon	ASC 181	Trainer	stays
1–4	Rare Candy	MEG 125	Trainer	stays
8–10	Darkness Energy	MEE 7	Energy	stays

What changes from one list to the next

24 cards show up in some lists and not in others. The percentage tells you how many lists run each one: at 50%, half the players want it and the other half deliberately chose something else.

Do not read this table as a ranking from best to worst. A card sitting at 80% is one four players in five find useful and the fifth cut on purpose, usually because they were expecting a different field. That disagreement is worth something on its own.

Here is how to use it when you build. Take the whole core first, no arguing. Then walk down this list and stop on every card you do not understand: read its text, work out what it is answering. A card you cannot explain is a card you will misplay, even if the champion had it in their list.

And if this is your first time with the deck, build the boring version — the full core plus the most common cards from here. Understand the deck before you start tinkering with it. That order is the only one that works.

The cards some lists run and others don't, most common first

Lists running it	Card	Copies	Printing	Kind
95 %19/20	Special Red Card	1	CRI 82	Trainer
90 %18/20	Team Rocket's Petrel	2–4	DRI 176	Trainer
90 %18/20	Secret Box	1	TWM 163	Trainer
85 %17/20	Gwynn	1–3	PBL 78	Trainer
80 %16/20	Yveltal	1–2	MEG 88	Pokémon
65 %13/20	Pokégear 3.0	1–2	SVI 186	Trainer
30 %6/20	Shaymin	1	DRI 10	Pokémon
15 %3/20	Bloodmoon Ursaluna ex	1	TWM 141	Pokémon
15 %3/20	Maractus	1	JTG 8	Pokémon
15 %3/20	Larry's Skill	2	PRE 115	Trainer
15 %3/20	Dark Bell	1	PBL 75	Trainer
15 %3/20	Team Rocket's Watchtower	1	DRI 180	Trainer
15 %3/20	Ultra Ball	1	MEG 131	Trainer
15 %3/20	Prism Energy	1	ASC 216	Energy
10 %2/20	Tatsugiri	1	TWM 131	Pokémon
10 %2/20	Unfair Stamp	1	TWM 165	Trainer
5 %1/20	Pikipek	2	PBL 66	Pokémon
5 %1/20	Toucannon	2	PBL 68	Pokémon
5 %1/20	Dudunsparce	1	TEF 129	Pokémon
5 %1/20	Dunsparce	1	JTG 120	Pokémon
5 %1/20	Trumbeak	1	PBL 67	Pokémon
5 %1/20	Energy Switch	1	MEG 115	Trainer
5 %1/20	Lana's Aid	1	TWM 155	Trainer
5 %1/20	Punk Helmet	1	PFL 92	Trainer

What it costs to build, and how long it will last

You need 40 different cards to cover every version of this deck, 16 of which nobody argues about. We do not have card prices, so we are not going to put a number on it.

What we can tell you is where the money goes. 1 ex Pokémon in the core, and they are almost the whole bill. The Trainers and basic Energy are near enough free, or already in your box. This deck runs no ACE SPEC card at all.

Now the question nobody asks you before you pay: how long will this deck stay legal? Of the 16 core cards, 5 carry the letter H in the bottom-left corner. That is the oldest letter still allowed in tournaments, which makes it the one that goes at the next rotation. Those 5 cards have an expiry date. We do not know what that date is — the publisher announces it and it appears in no card data — but we do know exactly which cards leave.

One last piece of old-player advice. Never build a deck card by card starting with the prettiest one. Start with the core Trainers: they are cheap, they carry over into other decks, and they are what makes the machine run. Buy the expensive Pokémon last, once you know you actually enjoy the deck.

What this deck struggles against

The attackers in this deck are Weak to Grass, Metal and Darkness. A card with a Weakness takes DOUBLE damage from an attacker of that type. Of the decks we track, 22 attack in exactly that type.

Here is how the table below is built. The Weakness is printed on your cards, the type of the attacker across the table is printed on theirs, and the fact that this particular deck really does play that attacker is counted off its own lists. You can check every line of it with the cards in your hand.

One limit, while we are here. Weakness alone does not decide a match. A deck can double your damage and still lose because it sets up too slowly, or crush you without ever touching your Weakness. This table tells you where to look first. What settles the game sits further along.

Going the other way, your attackers are Darkness, Water and Psychic — and 27 of the decks we track have an attacker Weak to one of those. That is you doubling, for once. Second half of the table.

These pages are about the same corner of the game. If you came away from this one still wondering about something, start with one of them.