Setup

You'll need:

For each set, number all duplicated pieces (i.e. the white pawns would be 1-8, as would the black ones. Do the same for the second set so you have 2 white and black sets numbered with 2 of each piece, identical in number and shape.

Rules

Play Magic as usual except:

When you cast a creature, pick a chess piece and put it on the card. Put the identical one in your "stronghold", the lower right corner of the board relative to you, or anywhere on that back row.

Instead of an "attack" phase, you have a "move" phase. Move one untapped piece per normal chess rules, but don't worry about the king. It's just another piece (that can't move too well), here. Creatures with summoning sickness cannot move. If your piece lands on an enemy or his stronghold, treat it as an attack. A piece must be moved onto a space shared by another chess piece to initiate an attack. No piece may move more than three spaces, even if they are field movers in chess. Pawns still move forwards only (and two spaces on their first move), but once a pawn reaches the back row, it is not promoted. The pawn may now move one space in any direction, like a king.

If one of your pieces moves onto a space shared by another piece, it's a one on one attack where the attacker is blocked by the creature it landed on. Ignore trample damage. Whoever lives through the attack stays in that spot, and if both survive, the attacker is moved one space away from the stronghold or attacked piece (the nearest empty space, otherwise chosen by the attacking piece's controller).

If a stronghold is attacked and there's a piece there, act as a normal attack with only the piece in the stronghold as blocking. No piece to block in the stronghold? Just take the life damage. Flying creatures cannot be attacked except by other flying creatures. Creatures with landwalk instead get to move like a Queen and a knight (your choice when you decide to move) if the opponent has that land.

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