Limiting ourselves to one color also means we get to use interesting card selections to solve problems that color often has trouble with
An infamous example from Shadows Over Innistrad was for Descend Upon The Sinful, which in French was translated to "Fondre sur les pcheurs", which, thanks to the incorrect diacritic on pcheurs, means Descend Upon The Fishermen
Exile is often been a place to temporarily hold cards for other abilities like suspend, adventure, and flicker effects
202.3 The converted mana cost of an object is a number equal to the total amount of mana in its mana cost, regardless of color
I found it so because I was playing Dimir Rogues, a deck that relies on evasive creatures with flying that had a somewhat hard time beating other aggressive decks
The combination of two intimidating forces, the ruthless Team Rocket boss and the fearsome sea serpent, creates a card that radiates menace from every angle