Desert

Oracle Text

T: Add C.

T: Desert deals 1 damage to target attacking creature. Activate this ability only during the end of combat step.

Card Rulings

10/4/2004 The ability can be used on any player’s attacking creatures. This includes your own and creatures in an attack you are not involved in (for multiplayer games).
4/18/2017 Desert is a land subtype with no special meaning. It doesn’t grant the land an intrinsic mana ability. Other cards may care about which lands are Deserts.

Additional Information