---
canonical_url: https://itsguestgaming.com/marvel-snap/locations/onslaught-s-citadel
markdown_url: https://itsguestgaming.com/marvel-snap/locations/onslaught-s-citadel.md
page_type: location
title: "Onslaught's Citadel MARVEL SNAP Location | Effect, Rarity, Tips & Decks"
description: "Onslaught"
---
MARVEL SNAP Location

# Onslaught's Citadel MARVEL SNAP Location

Onslaught's Citadel is a MARVEL SNAP location with the effect: “Ongoing effects here are doubled.”

Location referenceLast generated: 2026-07-29

![Onslaught's Citadel MARVEL SNAP location art](https://itsguestgaming.com/assets/snap-reference/locations/onslaught-s-citadel.webp)

source: MSZ

Reference Data

## Onslaught's Citadel Location Effect

Effect

Ongoing effects here are doubled.

Rarity

[Common](https://itsguestgaming.com/marvel-snap/locations/rarity/common)

Difficulty

[Standard](https://itsguestgaming.com/marvel-snap/locations/difficulty/standard)

Tip

Get a massive boost on Iron Man!

## How to Play Around Onslaught's Citadel

Get a massive boost on Iron Man!

## Onslaught's Citadel Location Details

Onslaught's Citadel is categorized as Common rarity and Standard difficulty in this reference layer. Use those tags to compare it with similar MARVEL SNAP locations and plan around common lane pressure.

## Best Decks for Onslaught's Citadel

Decks that can convert this lane effect into reliable power, disruption, or flexibility usually benefit most from Onslaught's Citadel. Start with the related library links, then use Deck Builder to test the plan.

## Cards That Work Well With Onslaught's Citadel

Compare this location with related card effects, movement tools, destroy/discard payoffs, and flexible curve cards using the MARVEL SNAP card library and Deck Builder.

## Related MARVEL SNAP Locations

- [Isle of Silence](https://itsguestgaming.com/marvel-snap/locations/isle-of-silence) — Ongoing effects are disabled here.

- [Smithsonian Museum](https://itsguestgaming.com/marvel-snap/locations/smithsonian-museum) — Your cards here have +1 Power for each Ongoing among them.

## Browse Related

- [All MARVEL SNAP Locations](https://itsguestgaming.com/marvel-snap-locations)

- [Common Locations](https://itsguestgaming.com/marvel-snap/locations/rarity/common)

- [Standard Difficulty Locations](https://itsguestgaming.com/marvel-snap/locations/difficulty/standard)

- [MARVEL SNAP Card Library](https://itsguestgaming.com/marvel-snap-cards)

- [MARVEL SNAP Articles](https://itsguestgaming.com/articles)

- [MARVEL SNAP Videos](https://itsguestgaming.com/videos)

### ItsGuestGaming Notes

Onslaught's Citadel has a permanent ItsGuestGaming reference page for effect lookup, search snippets, and gameplay context.

[Back to all locations →](https://itsguestgaming.com/marvel-snap-locations)

FAQ

## MARVEL SNAP Questions

What does Onslaught's Citadel do in MARVEL SNAP?

Onslaught's Citadel has the effect: “Ongoing effects here are doubled.”

How do you win Onslaught's Citadel in MARVEL SNAP?

Get a massive boost on Iron Man!

What decks are good with Onslaught's Citadel?

Decks that can take advantage of Onslaught's Citadel’s lane effect are usually best. Use the related links on this page to continue into ItsGuestGaming card, location, and strategy resources.

Is Onslaught's Citadel a MARVEL SNAP location?

Yes. Onslaught's Citadel is a MARVEL SNAP location in this reference database.