Marvel Snap Red Onslaught Simulator & Calculator

Red Onslaught is a 4-cost, 4-power card whose Ongoing gives him 3 random Ongoing abilities pulled from a fixed pool. This simulator rolls those 3 abilities so you can see what he might become before the card releases or before you spend tokens to craft him. Tap the card to roll, watch each result reveal in sequence, and read the full ability text for every card he copies. Below the roller, an Included Cards grid lists every card in his pool sorted by cost, and tapping any card opens its full detail with stats and release info. If you sign in and sync your collection, results show your equipped variant art instead of the default renders.

How Red Onslaught's Ongoing pool works

Red Onslaught does not copy every Ongoing card in the game. He draws from a specific pool of 54 Ongoing cards confirmed through the datamined game data, and this simulator uses that exact list. With 3 abilities drawn from 54 cards each roll, any one specific card has roughly a 5.5% chance of showing up in a given roll. Some hits are game-defining: Onslaught doubles your other Ongoing effects, Iron Man doubles your total Power at his location, Blue Marvel gives your other cards +1 Power, and Cerebro pumps your highest-Power cards. Others do little for a given board. Because the 3 picks are independent every roll, the card swings hard between busted and useless, which is exactly what the simulator is built to show you.

Roll, share, and browse the pool

After each roll, copy a branded 1200x630 share image straight to your clipboard for posting to Discord, Twitter, or anywhere else. The image shows all three copied abilities with SnapComplete branding, sized for social previews. Your roll history saves up to 200 previous rolls in a table, with per-row share buttons so you can go back and grab a standout result. The Included Cards grid gives you the full pool at a glance, sorted by the same cost order the rest of the site uses, and every card links straight to its detail view so you can check power, series, and release status without leaving the page. The simulator is fully free with no daily limit and no premium gate.

What to look for when evaluating Red Onslaught

Run 20 to 30 rolls and watch how often Red Onslaught lands a stack of Power-multiplying Ongoings versus a set of narrow location effects that do nothing for your plan. Onslaught is the roll everyone wants, because doubling your other Ongoing effects turns a board of small buffs into a blowout, and pairing it with a Power doubler like Iron Man is where the card gets absurd. Most rolls are more modest, and plenty are duds, so the simulator is the fastest way to build realistic expectations before he is in your collection. Since he pulls from the datamined pool the game actually uses, what you see here is what you would face across the table. Pair it with the Rama-Tut simulator for the On Reveal version of the same random-ability idea, or browse the full card database to study every Ongoing card in his pool.

54 Included Cards

Ant Man: 1-Cost · 1 Power · Ongoing: If your side of this location is full, +4 Power.
Quinjet: 1-Cost · 1 Power · Ongoing: Your created cards cost 1 less. (minimum 1)
J. Jonah Jameson: 1-Cost · 3 Power · Ongoing: Your text emotes are ruder.
Ebony Maw: 1-Cost · 7 Power · You can't play this after turn 3. Ongoing: You can't play cards here.
Goliath: 2-Cost · 1 Power · Ongoing: +1 Power for each other Ongoing card you have in play.
Madame Web: 2-Cost · 1 Power · Ongoing: Each turn, one of your other cards here is Moveable. (your choice)
Wild Child: 2-Cost · 1 Power · Ongoing: +4 Power if you’ve discarded a card. +4 Power if one of your cards has been destroyed.
Dazzler: 2-Cost · 2 Power · Ongoing: +2 Power for each location that's full on your side.
Goose: 2-Cost · 2 Power · Ongoing: Nobody can play cards that cost 4 or more here.
Luke Cage: 2-Cost · 2 Power · Ongoing: Your front-row cards can't have their Power reduced.
Mojo: 2-Cost · 2 Power · Ongoing: If both sides here are full, +6 Power.
Ravonna Renslayer: 2-Cost · 2 Power · Ongoing: Your cards with 1 or less Power cost 1 less. (minimum 1)
Victoria Hand: 2-Cost · 2 Power · Ongoing: Your cards that were created in your hand have +2 Power.
Armor: 2-Cost · 3 Power · Ongoing: Cards here can't be destroyed.
Gorgon: 2-Cost · 3 Power · Ongoing: Your opponent's created cards cost 1 more. (maximum 6)
U.S. Agent: 2-Cost · 3 Power · Ongoing: 4-Cost or more cards here have -3 Power.
Colossus: 2-Cost · 4 Power · Ongoing: Can't be destroyed, moved, or have its Power reduced.
Invisible Woman: 2-Cost · 4 Power · Ongoing: Cards you play here are not revealed until the game ends.
Lizard: 2-Cost · 6 Power · Ongoing: -4 Power if your opponent has 4 cards here.
Cerebro: 3-Cost · 0 Power · Ongoing: Your highest-Power cards have +3 Power.
Mister Fantastic: 3-Cost · 1 Power · Ongoing: Adjacent locations have +3 Power.
Captain Carter: 3-Cost · 2 Power · Ongoing: Add this card's Power to your back-row cards here. (can't add to itself)
Captain America: 3-Cost · 3 Power · Ongoing: Your other Ongoing cards here have +2 Power.
Cosmo: 3-Cost · 3 Power · Ongoing: On Reveal abilities won't happen here.
Jack Flag: 3-Cost · 3 Power · Ongoing: Your cards here with increased Power have +2 Power.
Mobius M. Mobius: 3-Cost · 3 Power · Ongoing: Your Costs can't be increased. Your opponent's Costs can't be reduced.
Punisher: 3-Cost · 3 Power · Ongoing: +1 Power for each enemy card here.
Speed: 3-Cost · 3 Power · Ongoing: +1 Power for each turn in which you spent all your Energy.
Strong Guy: 3-Cost · 4 Power · Ongoing: +6 Power if your hand has 1 or fewer cards.
Electro: 3-Cost · 5 Power · On Reveal: +1 Max Energy. Ongoing: You can only play 1 card a turn.
Starbrand: 3-Cost · 10 Power · Ongoing: Your opponent has +3 Power at each other location.
Klaw: 4-Cost · 2 Power · Ongoing: The location to the right has +6 Power.
Wong: 4-Cost · 2 Power · Ongoing: Your On Reveal abilities here repeat.
Ms. Marvel: 4-Cost · 5 Power · Ongoing: Your adjacent locations with 2+ cards and no repeated Costs have +6 Power.
Ka-Zar: 4-Cost · 6 Power · Ongoing: Your 1-Cost cards have +1 Power.
Omega Red: 4-Cost · 6 Power · Ongoing: If you're winning here, +3 Power to other locations.
Stardust: 4-Cost · 6 Power · Ongoing: Cards can’t be added to locations except by playing or moving them.
Man-Thing: 4-Cost · 7 Power · Ongoing: 3-Cost or less cards here have -2 Power.
Typhoid Mary: 4-Cost · 10 Power · Ongoing: Your other cards here have -2 Power.
Iron Man: 5-Cost · 0 Power · Ongoing: Your total Power is doubled here.
Professor X: 5-Cost · 2 Power · Ongoing: Moving is the only way to add or remove a character from here.
Blue Marvel: 5-Cost · 3 Power · Ongoing: Your other cards have +1 Power.
Darkhawk: 5-Cost · 3 Power · Ongoing: +2 Power for each card in your opponent's deck.
Devil Dinosaur: 5-Cost · 4 Power · Ongoing: +2 Power for each card in your hand.
Ronan the Accuser: 5-Cost · 5 Power · Ongoing: +2 Power for each card in your opponent's hand.
Sera: 5-Cost · 5 Power · Ongoing: Cards in your hand cost 1 less. (minimum 1)
Ajax: 5-Cost · 7 Power · Ongoing: +1 Power for each card in play afflicted with negative Power.
Superior Iron Man: 5-Cost · 8 Power · Double Cost reductions to this. Ongoing: Double Power increases to this.
War Machine: 5-Cost · 9 Power · Ongoing: Nothing can stop you from playing cards anywhere.
Red Skull: 5-Cost · 14 Power · Ongoing: Enemy cards here have +2 Power.
Gorr the God Butcher: 6-Cost · 1 Power · Ongoing: +2 Power for EACH On Reveal card in play.
Onslaught: 6-Cost · 8 Power · Ongoing: Your other Ongoing effects here apply an additional time.
The Living Tribunal: 6-Cost · 9 Power · Ongoing: Split your total Power evenly among all locations.
Orka: 6-Cost · 11 Power · Ongoing: +7 Power if this is your only card here.