Dabenya, Dawn's Promise

Flying, first strike, vigilance
When Dabenya, Dawn's Promise enters the battlefield, if you cast it, you may pay {r}{w}{b}. If you do, choose a permanent type at
random. Destroy each permanent of that type. If two or fewer permanents were destroyed this way, at the beginning of your next upkeep, you may pay {r}{w}{b} and repeat this process. (Permanent types include artifact, creature, enchantment, l