One Who Surpasses the Storm, Thavas (V-BT11/SP11EN) [Storm of the Blue Cavalry]

[ACT](VC/RC)[1/turn]:[COST][[Rest] a rear-guard], choose up to one of your opponent's rear-guards, and retire it. [AUTO](VC):At the beginning of your battle phase, if three or more of your rear-guards are [Rest], [COST][discard a card from your hand], search your deck for up to one grade 4 card, ride it as [Stand], shuffle your deck, and that unit gets [Power] /drive +1 until end of turn. At the end of this turn, retire that unit, and ride a grade 3 card from your soul as [Rest].