Read the Gatherer rulings on Banisher Priest : Banisher Priests ability causes a zone change with a duration, a new style of ability thats somewhat reminiscent of older cards like Oblivion Ring
"I watched this thing unfold as it was happening, so to me it was a piece of Magic history
I do believe others playing Ramunap Red will also consider the mirror match when it comes to how they design their decks, which makes me believe we will see more copies of Chandras Defeat, Pia Nalaar, and Aethersphere Harvester in sideboards
Ideally youd run two or three of each basic for consistencys sake and the ability to fetch them with ramp spells like Rampant Growth
As for dual colours, eight are Dimir (blue and black), 19 are Rakdos (black and red), four are Gruul (red and green), five are Orzhov (white and black), one is Izzet (blue and red), 14 are Golgari (black and green), and six are Boros (white and red)