Gravidia Claxton

:When this unit boosts a vanguard with "Nordlinger" in its card name, [ 1 & discard a card from hand], choose one of your vanguards, and it gets ":If no trigger units were put into your trigger zone this turn, this unit gets drive +1." until end of that battle. (If a trigger is revealed before the second drive check, a third drive check cannot be performed)