Swarm Intelligence

Format legality

Where you can play Swarm Intelligence in sanctioned and popular formats.

All printings (4)

Prices range from $0.36 to $2.29 across finishes. Cheapest printing: Hour of Devastation at $0.36.

More from Hour of Devastation

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Rulings

Official rulings from Wizards of the Coast (8).

• 2017-07-14Swarm Intelligence can copy any instant or sorcery spell, not just one with targets.
• 2017-07-14Swarm Intelligence can copy the spell even if it’s countered before Swarm Intelligence’s triggered ability resolves.
• 2017-07-14The copy is created on the stack, so it’s not “cast.” Abilities that trigger when a player casts a spell (such as Swarm Intelligence’s own ability) won’t trigger.
• 2017-07-14The copy will have the same targets as the spell it’s copying unless you choose new ones. You may change any number of the targets, including all of them or none of them. If, for one of the targets, you can’t choose a new legal target, then it remains unchanged (even if the current target is illegal).
• 2017-07-14If the spell that’s copied is modal (that is, it says “Choose one —” or the like), the copy will have the same mode. A different mode can’t be chosen.
• 2017-07-14If the spell that’s copied has an X whose value was determined as it was cast (like Torment of Hailfire does), the copy will have the same value of X.
• 2017-07-14If the spell has damage divided as it was cast (like Chandra’s Pyrohelix), the division can’t be changed (although the targets receiving that damage still can).
• 2017-07-14The controller of a copy can’t choose to pay any alternative or additional costs for the copy. However, effects based on any alternative or additional costs that were paid for the original spell are copied as though those same costs were paid for the copy.

Frequently asked questions