Official Mechanic:Vanguard Circle

"Vanguard Circle" (Japanese: ヴァンガードサークル Vangādo Sākuru) (Documented as "(VC)" in the database and generally abbreviated as such) is a zone where your Vanguard is. Any unit(s) on this circle is considered your "Vanguard".

In official playing field, it is located in the center column, each facing the opponent's Vanguard Circle. The term "Vanguard Circle" is stylized with an icon in card text.

Actions that place card(s) onto the Vanguard Circle

 * Ride : Once per turn, during the Ride Step, the turn player can choose a card from his/her hand whose grade is equal to or one greater than the current unit on his/her (VC), and place it onto his/her (VC).
 * Legion : Some Grade 3 cards have the "Legion" ability, and can place their "Legion Mate" onto the (VC) as the second Vanguard, side-by side with each other.
 * Stride : Once per turn, during the Stride Step, If both players' Vanguard is grade 3 or greater OR the turn player's Vanguard is grade 3 from the beginning of the turn, the turn player can pay the cost for Stride, and place a G Unit from his/her G Zone onto the (VC).
 * Other card abilities that can move itself to the Vanguar Circle.

Rulings

 * When a unit on (VC) attacks, during the Drive Step, it preforms Drive Check equal to its drive. If its drive is zero or less, preform nothing.
 * When a unit on (VC) is hit, it does not retire and is removed from the (VC). Instead, the player whose Vanguard is hit preforms Damage Check equal to the attacking unit's Critical. If the attacking unit's critical is zero or less, preform nothing.