The Ruinous PowersThe Chaos Gods wreak havoc across the galaxy, waging war with their corrupted, mutated armies
It costs only 1 white Mana, so you could get this out on turn 1 to start doing its work
Furthermore, you can search for a second "Exosister Vadis" with the search effect of "Lord of the Heavenly Prison," which leads into your next turn's plays
Birds of Paradise has fallen out of favor in Constructed due to the power of other mana dorks such as Delighted Halfling and Ignoble Hierarch, but its a slam dunk in multicolor Commander decks at the very least
An ability that triggers when something "attacks and isn't blocked" triggers in the declare blockers step after blockers are declared if (1) that creature is attacking and (2) no creatures are declared to block it
So far, all of the battles previewed have some sort of enters the battlefield effect on the front side, which acts sort of like a sorcery that then creates this altered game state where your opponent now has this position they must defend