Blade Deity of Reincarnation, Mikazuki Munechika

:If you have another unit in the same column as this unit, [discard a card from your hand], and until end of turn, when this unit would attack, this unit battles all of your opponent's front row units. :When your opponent's rear-guard is retired during your turn, choose one of your vanguards, and it gets +5000 until end of turn.