Lost SoulHow it works & interactions with other cards

What It Does

Lost Soul is a 2/1 creature with Swampwalk, a keyword ability that provides a form of evasion. As long as the player you are attacking controls at least one land with the 'Swamp' subtype, Lost Soul cannot be blocked by any creatures. This remains true even if the opponent has flying creatures, reach, or other powerful defenders.

How It Resolves Step by Step

When you declare Lost Soul as an attacker during the declare attackers step, the game checks the defending player's board. If that player controls a Swamp, the evasion is active. During the declare blockers step, the defending player is legally prohibited from assigning any creatures to block Lost Soul. The damage will then proceed directly to the player or planeswalker it is attacking during the combat damage step.

Common Mistakes

A common mistake is assuming the land must be a basic Swamp. Swampwalk checks for the land subtype, meaning it works against nonbasic lands like Dual Lands or Shock Lands that have 'Swamp' in their type line. Another mistake is trying to grant it extra triggers with other cards; since Swampwalk is a static ability and not a triggered ability, it does not interact with effects that double triggers.

When to Play It

Lost Soul is most effective in matchups against other black decks or decks utilizing multicolored mana bases that include Swamps. It serves as a consistent clock in the early to mid-game, forcing your opponent to find removal spells since they cannot rely on their creatures to stop the incoming damage.

Interaction examples

Searching for the Weakness

Solemn Simulacrum

You control Lost Soul and cast Solemn Simulacrum. When Solemn Simulacrum enters, you search your library for a basic land. If you are playing against a black deck, you may notice they already have a Swamp. During your next turn, you can attack safely with Lost Soul because its Swampwalk is active, while your Solemn Simulacrum remains a potential blocker or sacrifice target.

The Type Confusion

Roaming Throne

If you have Lost Soul on the battlefield and play Roaming Throne, choosing 'Spirit' or 'Minion', you might expect more evasion. However, Roaming Throne only affects triggered abilities (starting with 'When', 'Whenever', or 'At'). Because Swampwalk is a static ability, Roaming Throne does not change how Lost Soul functions or make it 'twice as unblockable'.

Evasive Maneuvers

In a vacuum, Lost Soul relies entirely on the opponent's land choices. If your opponent controls a single Swamp, Lost Soul can attack every turn without fear of being blocked by their largest ground creatures or even their flyers, dealing a steady 2 damage each combat.