402.1. Readying is an action that marks a non-spell Game Object as available for action.
402.1.a. To mark it, rotate the card 90 degrees opposite of Exhausting , so that it is vertically oriented in front of you.
402.1.b. A Unit that is already Ready cannot be Readied again.
402.1.c. If a Unit is instructed to be Readied while it is already Ready , nothing additional happens.