Mars Circe: Non-capturing moves are normal, but to capture a unit is transported to its Circe rebirth square, which must be vacant, before proceeding to move towards the captured unit, all as one move.
“Mars Circe works as follows: Captures occur only as if the capturing piece is starting from its game array square (determined as usual in Circe). Thus for example a black king can capture only by arriving on d8/d7/e7/f7/f8, as if from e8. In Mars Circe, captured pieces usually disappear as in normal chess, but in combination with PWC they reappear on the square just vacated by the capturing piece (NOT its game array square, unless of course the capturer actually plays from that square).“ (CJF)