Choreographed Sparks

Two red mana buys a copy spell built around a single generous permission: "one or both" lets the same cast fork across two entirely different targets, duplicating a burn spell and a creature spell in one motion. That greed is exactly what the "can't be copied" line polices. A copy engine that another Twincast-style effect could fork, or that could be aimed at a second instance of itself, would spiral out of the designers' control, so the card fences off the one interaction that breaks it while leaving every legal copy target open. The creature mode pays its own tax: the token arrives with haste but sacrifices itself at the end step, so it buys a single attack or a one-turn enters-the-battlefield trigger rather than a permanent second body. That clause is what keeps a two-mana instant from stapling a duplicate of your best creature onto the battlefield forever; it converts the effect into tempo and triggers instead of raw value. The instant-speed timing is where the real design tension sits. Because the card can only target spells you control while they are still on the stack, the creature mode is not a free combat trick: unlocking it at instant speed means you are already casting a creature with flash, a narrow overlap. The spell-copy mode has no such caveat, and copying your own burn or removal in response to the turn is where most casts will earn their two red mana.