Sinister Six is the last Series 5 card joining Marvel Snap for the July 2026 Season, Spider-Man: Brand New Day. It is a 6-Cost, 12-Power card that reads: Game Start: The first 6 characters you draw are EVIL! After you play them all, merge them into this and add this to the last one’s location. (0/6)
Decks with Sinister Six
Today, let’s explore the new card strengths and, of course, the best decks to try it out in.
Synergies
A typical Marvel Snap game lasts 6 turns, and we draw 9 cards from our deck. If we couldn’t manipulate those numbers, Sinister Six would be one of the most difficult cards in the game’s history to play properly. Indeed, even the fastest decks typically don’t play their sixth card until turn 4, leaving them with three cards and two turns in order to win the second location required to take the match.
This gets us to the biggest obstacle the new 6-cost has to overcome : When should we merge our cards into it?
If we play our cards in a rush to get Sinister Six early on and then expand our remaining resources to win another location, we expose ourselves to possible counter cards:
Decks with Shadow King
Decks with Shang-Chi
On the other hand, until we have summoned the Sinister Six, only cards from outside our deck will stay put. This means we need to win a location through created or summoned cards only if we want to summon the Sinister Six on the last turn of play.
Here are a few example of low-cost cards we can use to progress Sinister Six while still gathering options to play cards we won’t merge.
Decks with Maria Hill
Decks with Valentina
Decks with Askani’son
Decks with Iron Patriot
Decks with Zombie Mister Fantastic
Decks with Mysterio
This difficult choice only gets more delicate when we add the fact merged cards lose their ability. As a result, we likely want to pair Sinister Six with On Reveal or Activate cards. After we got their ability out of the way, these cards are just a certain amount of points.
In the case of proactive disruptive cards for example, this can lead to very tricky situation. Imagine you play against Move and you drop Mercury on turn three. Because she started in your deck, she would be merged into Sinister Six once you played 6 characters. What do you do?
- Do we stop playing cards from our deck to keep Mercury on the board?
- Do we play cards, summon Sinister Six and give our opponent a chance to Move again?
There is a lot to ponder with this card, so let’s keep it simple instead : Which synergies are best equipped to summon Sinister Six and protect it from Shadow King or Shang-Chi if required?
Decks with Thanos
The Infinity Stones are cheap characters with a draw attached. Not only we progress to our 6-cost for little energy, we actually keep a loaded hand to contest the other locations as well.
Decks with Mirage
Decks with Iron Patriot
Marvel Snap has enough cheap cards adding others to our hand to build a deck around them. Bounce for example, is notorious for that play style designed to reuse the same cards multiple times in a match. Iron Patriot is another great example, as we could all-in on the 2-cost’s location, and then move that power with Sinister Six later on if we desire. This would allow to control when to summon Sinister Six, as well as managing our resources to contest other locations.
Decks with Supergiant
Sinister Six doesn’t merge the first six cards we play, but the first six cards we draw. Thus, if we hide one of those cards until the end of the game, the opponent won’t get a chance to interact with Sinister Six.
Decks with Martyr
Decks with Starbrand
Just like Techno-Organic Virus, Sinister Six can be used to merge cards with a negative ability, keeping their power only.
The Verdict: Should You Get Sinister Six?
12 power for free is a lot, although it is a huge risk to pack everything into one single card.
Shadow King resets Sinister Six to 12 power while Shang-Chi is catastrophic. If we can reliably dodge these two, the new card probably wins its location most of the time.
However, if we have to spend 6 cards plus another one as protection such as Cosmo, Juggernaut, and so on, it becomes almost impossible to contest the other two locations. Plus, we also have to hope those protective cards aren’t part of the first six we draw, or they will be merged into Sinister Six.
With that in mind, the key for Sinister Six to thrive will be to summon it on a location our opponent has committed resources to. If the 6-cost wins that location, the investment we had to make at least denied cards from our opponent as well.
Pre-Release Score:
Sinister Six Decks
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I hope this review of the new card was helpful. You can find everyone on the Marvel Snap Zone team in our community discord to have a chat or ask any questions.
Good Game Everyone!
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