If you have a vanguard with "Kheios" in its card name, play this with [COST][Counter-Blast 1]!
Look at the top five cards of your deck, choose up to the same number of cards from among them as the number of cards in your soul with "Kheios" in their different card names, put them into your soul, and shuffle your deck. Then, if your soul has eight or more different cards, choose up to one card from your soul, call it to (RC), choose one of your rear-guards with "Mikani" in its card name, and it gets Power@+10000 until end of turn.