Chakrabarthi True Dragon, Mahar Nirvana

:During your turn, if you have a unit in the [overDress] state, all of your front row units get +10000. :[ 1 & Put a card with "Nirvana" in its card name from your hand or soul into your drop], choose a grade 0 from your drop, call it to , choose one of your opponent's vanguards, and if your opponent's damage zone has four or less cards, deal one damage.