a vanguard is played in the front row center circle known as the vanguard circle this can be any card grade 0 to grade 3 and grade 4 in special occasions that we can explain later. Each player starts with a grade 0 unit (usually one without a trigger effect) face down in their vanguard circle this is your starting vanguard. then each turn you can perform a ride where you take a unit from your hand and place it on top of the unit in your vanguard circle this unit can be either one grade higher or the same grade as the unit currently in the vanguard circle.