Spell Copy

Spells and permanents that create a copy of an instant or sorcery spell, either targeting one currently on the stack or copying the next one you cast this turn. Fork and Twincast copy a target instant or sorcery directly, Dualcaster Mage copies on entry, and Galvanic Iteration, Thousand-Year Storm, and Swarm Intelligence trigger a copy whenever you cast a spell. Distinct from Ability Copy, which doubles activated abilities rather than spells on the stack, and from Creature Copy, which makes a duplicate of a permanent already on the battlefield. The copies created here resolve as spells, not as new permanents entering play.