What it does
When a spell with Storm resolves, you copy it once for each spell cast before it this turn. You choose new targets for each copy if you want. The copies are created on the stack, not cast, which is a crucial distinction.
Because copies aren't cast, they don't trigger cast-triggered abilities, won't be countered by "counter target spell you cast" effects tied to casting, and don't add to your own Storm count for later spells. The original spell still counts toward Storm, but only spells cast before it that turn matter—your own included.
In Commander, Storm rewards spell-heavy turns: cheap cantrips, rituals, and free spells inflate the count. Cards like Tendrils of Agony or Brain Freeze can win or mill out the table after a long chain. Watch for opponents' instants reducing your count mid-build, and remember Storm counts reset each turn.













