Dragontree Wretch, Draco Batical

[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 or less unit card from among them, call it to (RC), and shuffle your deck.