Skittering HorrorHow it works & interactions with other cards

What It Does

Skittering Horror is an efficient creature with a single, mandatory triggered ability. As long as it is on the battlefield, the moment you cast another creature spell, Skittering Horror must be sacrificed. This is not an optional choice; it is a state-triggered ability that responds to the act of casting, regardless of whether that new creature spell actually resolves or is countered.

Step-by-Step Resolution

First, you announce you are casting a creature spell and pay its costs. Second, Skittering Horror's ability triggers and is put onto the stack on top of the creature spell you just cast. Third, the sacrifice ability resolves first, moving Skittering Horror to the graveyard. Finally, the creature spell you cast resolves and enters the battlefield. This means the Horror is always gone before your new creature arrives.

Common Mistakes

A frequent error is assuming you can sacrifice Skittering Horror to pay a cost for another spell or effect while its trigger is pending. Once you cast a creature, the trigger is automatic. Additionally, players often forget that the Horror is sacrificed even if the creature spell they cast is countered by an opponent. The trigger cares about the act of casting, not the result of the spell.

When to Play It

This card shines in aggressive decks that plan to win before needing to play more creatures, or in strategies that benefit from creatures dying. It is also an excellent target for 'reanimate' effects or spells that grant Haste, allowing you to get damage in before you are forced to move on to your next creature play.

Interaction examples

Sequencing with Solemn Simulacrum

Solemn Simulacrum

If you have Skittering Horror on the battlefield and cast Solemn Simulacrum, the Horror's ability triggers immediately. You must sacrifice Skittering Horror while Solemn Simulacrum is still a spell on the stack. After the Horror is in the graveyard, Solemn Simulacrum will resolve and enter the battlefield, allowing you to search for a land.

Doubling the Downside

Roaming ThroneSolemn Simulacrum

If you control Skittering Horror and Roaming Throne (with 'Horror' chosen as the type), casting Solemn Simulacrum will cause Skittering Horror's ability to trigger twice due to the Throne's effect. While this doesn't change the outcome for the Horror—it can only be sacrificed once—it demonstrates how the Throne interacts with the Horror's triggered ability.