Blue HorrorHow it works & interactions with other cards

A Reward for Magic

Blue Horror features a triggered ability that triggers whenever you cast an instant or sorcery spell. Unlike abilities that trigger upon resolution, this occurs as soon as you finish the process of casting the spell and pay its costs. Each Blue Horror you control will trigger independently, allowing you to ping targets multiple times for a single spell cast.

Resolution Step-by-Step

First, you cast an instant or sorcery spell, placing it on the stack. This immediately triggers the Blue Horror's ability, which is put on top of the stack. You must choose a target for the 1 damage at this time. The damage ability will resolve before the original instant or sorcery spell does. If the target becomes illegal before the ability resolves, the ability is removed from the stack and no damage is dealt.

Common Pitfalls

A common mistake is forgetting that 'casting' a spell is different from 'copying' a spell. If an effect copies a spell directly on the stack, Blue Horror will not trigger because no spell was 'cast'. Additionally, Blue Horror must be on the battlefield at the moment you finish casting the spell; if a spell creates a Blue Horror, that specific token won't trigger from the spell that created it.

Strategic Timing

Blue Horror is most effective in decks with a high density of low-cost spells. Because it triggers on casting, you can use the 1 damage to remove small blockers or planeswalkers before your actual spell resolves, potentially clearing the way for other effects or protecting your life total.

Interaction examples

The Horror Multiplies

Pink Horror

When your Pink Horror dies, its 'Split' triggered ability goes on the stack. Once it resolves, you create two Blue Horror tokens. From this point forward, every instant or sorcery you cast will trigger both tokens, dealing a total of 2 damage distributed as you choose among any targets.

Clearing the Board

Ragavan, Nimble Pilferer

If your opponent controls Ragavan, Nimble Pilferer, you can cast any cheap sorcery spell. The Blue Horror's ability triggers and goes on the stack above your sorcery. You target the Monkey Pirate with the 1 damage, destroying it before your sorcery even resolves.

Targeting Resilience

Walking Ballista

Blue Horror's damage can be used to finish off creatures that have already taken damage or had their toughness reduced. If a Walking Ballista has one +1/+1 counter remaining, casting an instant will trigger Blue Horror, allowing you to deal the final point of damage to destroy the Construct.