This move is risky on both sides. Mavs: the Mavs do this to add to their defense. Issac’s Lively and Grant will create a front court capable of competing defensively. A first and second is a heavy price but I think it’s worth it if they contend orc can make a run.
Magic: giving up your teams best defender on a team friendly contract seems strange but they make this deal for a few reasons. One Issac cannot stay healthy. Two with Wagner and Paulo they all sort of play the same position. Big wing probably PF’s. (Maybe not Wagner). I think picks and a stretch big might be a better fit for this team.