Dreadbore

The trade is the whole pitch: two mana for unconditional destruction of a creature or a planeswalker, paid for entirely by being a sorcery. Terminate had already established the Rakdos two-mana kill spell as a fixture, but it stopped at creatures and added a regeneration clause; this widens the target to planeswalkers and asks nothing in return except that you cast it on your own turn. That sorcery restriction is doing more work than it looks. The reason a clean, cheap, unconditional removal spell can read "creature or planeswalker" without warping every fair matchup is that it cannot answer a threat on the stack, cannot ambush an attacker, cannot be held up as interaction. You commit it proactively, and that timing window is the entire cost of its breadth. Against planeswalkers in particular the constraint matters: you cannot Dreadbore a walker the turn it lands in response to its first activation, so the card punishes a board state rather than a play. What it represents is the modern Rakdos design language fully formed: efficiency bought back not with a drawback printed in the text box, but with a phase restriction that quietly limits when efficiency is allowed to happen.