Shoal

"Shoal" is a keyword exclusive to the Cobalt Scale clan.

How it Works

 * A “Shoal” ability can be activated to put chosen rear-guards or other cards into your soul, and search your deck for a card with its grade is a grade less than the number of cards put into your soul with it. If you choose to activate the ability, at the beginning of your next turn, return the unit that is called on the bottom of your deck, and call all cards that are put into the soul by the ability to separate (RC).
 * For example: If you put 2 rears into your soul, you can call a grade 1 from your deck. If you put 3 rears into your soul, you can call grade 2 from your deck. If you put 4 rears into your soul, you can call grade 3 from your deck.
 * Normally shoal ability requires two units at least to be put into the soul, in few cases, it can be any two cards instead. Requiring at least two cards is to prevent calling grade 0 and possible infinite loop. (Putting 1 grade 0 rear to soul -> Calling a grade 0 from deck -> Return 1 grade 0 from soul to deck -> and loops)
 * If there isn't a card that can be called due to the ability, the rest of the ability continues.
 * If the called unit leaves the field before it can be returned to the bottom of your deck at the beginning of your next turn, at the beginning of your next turn, the rest of the ability continues.