ShrivelHow it works & interactions with other cards

What It Does

Shrivel is a mass-debuff spell that affects every creature on the battlefield when it resolves. Each creature gets -1/-1 until the end of the current turn, which can cause creatures with 1 toughness to be put into the graveyard as a state-based action due to having 0 or less toughness.

How It Resolves Step by Step

First, the spell is cast and placed on the stack. When both players pass priority, Shrivel resolves. At this exact moment, the game checks which permanents have the 'creature' type. Every creature currently on the battlefield receives the -1/-1 penalty. This effect is locked in; creatures that enter the battlefield later in the turn will not be affected by this specific instance of Shrivel.

Common Mistakes

A common error is thinking that Shrivel acts like a continuous aura or field effect for the rest of the turn. It does not. Because it is a sorcery, it only applies to creatures present during its resolution. If you cast a creature later in the same turn, it enters with its full stats. Additionally, remember that -1/-1 is not the same as damage; it effectively lowers the creature's power and toughness values directly.

When to Play It

Shrivel is most effective against 'go-wide' strategies that utilize many 1/1 tokens. It is also useful during the pre-combat main phase to shrink your opponent's blockers, potentially allowing your creatures to survive combat encounters they would otherwise lose.

Interaction examples

Timing Your Tactics

Reanimate

If you cast Shrivel while your opponent has a 1/1 creature, that creature will die. If you then cast Reanimate to bring a creature back from the graveyard later in the same turn, the newly returned creature will NOT have -1/-1, because it was not on the battlefield when Shrivel resolved.

Finding the Solution

Demonic Tutor

When facing an army of tokens, you can use Demonic Tutor to search your library for Shrivel. Since Shrivel is a sorcery, you can immediately cast it during your main phase after the tutor resolves to wipe the board of all 1-toughness creatures.