Summoner Wars (Second Edition): Blacksaber Promo Card

Whether you look at the summon cost or the steal cost this is clearly a good deal, which means the opponent must pay to steal her, then you must pay to steal her back, and so on, resulting in a drain of two magic per turn out of the game unless she gets stranded someplace from where she can't do any good in a single turn. Imagine each player dropping one early in a game!