Reign of Dimir

All sorceries and instants you cast gain Flashback {x}{u}{b} (You may cast this card from your graveyard for its flashback cost, then exile it. X is equal to the card's converted mana cost)
You may cast cards that have both black and blue mana in their mana costs for {3} less.
"Wait, you're letting Dimir take over Ravnica? I'm
not sure that's a good idea" - Azorius Guildmaster