The Shifting Keep

During deployment, if this general is on the battlefield, instead of setting up a KASTELAI BLOOD KNIGHTS unit on the battlefield, you can place it to one side and say that it is set up in the Crimson Keep as a reserve unit.

You can set up 1 unit in the Crimson Keep for each unit you have set up on the battlefield. At the end of your movment phase, you can set up 1 or more of the reserve units in the Crimson Keep on the battlefield, wholly within 6" of the battlefield edge and more than 9" from all enemy units.