Swamp (ONS-340) is a Basic Land — Swamp from the Onslaught expansion. It taps to add one black mana ({B}). As a basic land it commonly serves as a core source of mana for black decks and is legal for deck construction where Onslaught cards are permitted.

Identity & printing

Name: Swamp
Number: 340
Rarity: Common
Variant: Normal
Language code: EN

Type line & stats

Supertype: Basic
Subtypes

Market prices (catalog API)

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Catalog pricing data as of 18 Apr 2026, 15:36

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Swamp

Types

Land

Catalog metadata

Imported from: Vendor Tools Public API catalog

Rules

({T}: Add {B}.)

Set, artist & references

Artist: Doug Chaffee
Language: English
Set name: Onslaught
Game name: Magic The Gathering

In play

Abilities, attacks, weakness & resistance

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Description

Swamp (ONS-340) is a Basic Land — Swamp from the Onslaught expansion. It taps to add one black mana ({B}). As a basic land it commonly serves as a core source of mana for black decks and is legal for deck construction where Onslaught cards are permitted.

Catalog pricing data as of 18 Apr 2026, 15:36