Dragontree Wretch, Draco Batical D-BT09/003 RRR

[AUTO]:When this unit is placed on (RC), COST [Counter Blast (1)], choose one of your (RC) without any Dragontree markers, and put a Dragontree marker. [AUTO](RC)1/Turn:When your opponent's rear-guard is retired during your main phase, COST [Soul Blast (1)], look at the top five cards of your deck, choose up to one grade 1 unit card from among them, call it to (RC), and shuffle your deck.