Defining the Essence

Kiho Battle: Bow one of your target Shugenja at any location: If you control a Samurai at the current battle, destroy a target Terrain.
Kiho Limited: Target one of your unbowed Shugenja: Draw an additional card during your next End Phase.
Kiho Reaction: Before an Event resolves, bow one of your target Shugenja: Negate that Event's effects. For the rest of the game, copies of that Event can not resolve.