The Dragonoid populace began a great migration on the king's orders.
[LV I] [LV II] [LV III] When Summoned
Select one of your opponent's spirits with 6000 or fewer BP and destroy it.
[LV II] [LV III] During Your Attack Step
When one of your spirits with a (soul core) on it destroys one of your opponent's spirits via comparing BP, select one of your opponent's spirits with 6000 or fewer BP and destroy it.