Theros

Swan Song | Instant | | Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying. | Peter Mohrbacher

Hero's Downfall | Instant | | Destroy target creature or planeswalker. | Ryan Pancoast

Steam Augury | Instant | | Reveal the top five cards of your library and separate them into two piles. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard. | Dave Kendall