Chronofang Tiger

:[Discard one or more cards from your hand with the sum of their grades being 3 or greater], search your deck for up to one grade 4, ride it as , and shuffle your deck. At the end of the turn, retire that unit, and ride a grade 3 from your soul as . :When rode upon by "Chronotiger Rebellion", [discard a card from your hand], and one of your vanguards gets +1/drive +1 until end of turn.