Rupture Dragon, Minirex

:Forerunner : 2 When this unit is retired from for the effect or cost of your card with "Rex" in its card name, you may pay the cost. If you do, choose one of your , search your deck for up to two grade 1 or greater cards with "Rex" in their card names, call them to separate in the same column as the chosen , shuffle your deck, and at the end of that turn, bind those units face up.