On your turn, after your move you may declare an "alliance" with one other player. You must then give a pawn you control to that player: remove that pawn from the game, and the chosen opponent can choose to place a pawn into his 3x5 starting area at the start of his next turn. That opponent, for the next two turns, may not capture any of your pieces, and whenever he captures any piece during his next two turns, you can place a pawn into you 3x5 starting area. However, you may not capture any of that player’s pieces until the alliance expires.

First appearance: 12/5/06 (4th draft of rules).
Tags: Interruption power