Role Reversal
The Donate effect, doubled and pointed sideways. Trade-a-permanent designs have almost always run one direction: you hand something over (Donate, Illusions of Grandeur), or you steal something (Control Magic, Act of Treason). This one insists on a swap, and that constraint is the whole design engine. Because both permanents only have to share a type, the card is built to fund the difference: give away a spare land and take an opponent's best one, trade a token for a bomb, or offload a liability while pocketing something real. Crucially, the two targets need not include one of your own. In a multiplayer setting the swap can happen entirely across the table, forcibly rearranging other players' boards without you paying anything but the spell, which is where the effect gets genuinely political. The shared-type clause is broad enough that "permanent" spans the whole board, so the mirror-image version (creature for creature you both value) is the least interesting thing it does. The warped lines come from lopsided exchanges: one side a burden someone wants gone, the other an asset someone wants owned, with the symmetry existing only on paper. Sorcery speed, a three-mana price in a color pair that rarely wants to spend it this way, and the awkwardness of needing two legal targets in the right configuration have consigned it to the deckbuilding fringe, where an effect this open-ended tends to live.
