Does a copy of a spell with a target inherit the same target or can you choose a new one?

When a spell or ability creates a copy of a spell on the stack, the copy is created with the same choices made for it — modes, costs, X values — but you may choose new targets for the copy. This is explicitly stated in CR 706.10: the controller of the copy may choose new targets for it.

This is an important distinction: you may choose new targets, but you are not required to. You can keep the same target as the original if you wish. However, you must still make legal choices — you cannot choose an illegal target simply because the original had it.

This rule is why cards like Twincast, Reverberate, and Fork are so powerful: they let you copy a spell and then redirect it to a different target, such as turning an opponent's removal spell back at one of their own creatures, or copying your own Lightning Bolt to hit a second creature.

Example: Your opponent casts Lightning Bolt targeting your creature. You cast Reverberate, copying that Lightning Bolt. When the copy is placed on the stack, you choose a new target for it — you point the copy at your opponent's face for 3 damage, while the original still targets your creature.

Note: Some effects specifically instruct a copy to retain the same targets (e.g., effects that say "with the same targets"). In that case, you do not get to choose new targets — the copy is locked in to the original's targets per CR 706.10's exception clause.