What it does
Rebound lets you cast an instant or sorcery from your graveyard for free during your next turn. When a spell with rebound resolves, instead of going to the graveyard normally, if you cast it from your hand, it gets exiled. At the beginning of your next upkeep, you may cast it from exile without paying its mana cost. If you don't, it stays exiled forever.
The big nuance: rebound only triggers if you cast the spell from your hand. Copying it, casting it from your graveyard, or playing it from exile won't set up another rebound—so you only get the bonus cast once. Also, you may cast it on the second turn, but if you decline, you lose it permanently.
In Commander, rebound effectively doubles value spells like wraths or card draw, making it strong but slow since you must survive to your next upkeep to cash in.













