This happens because Omnath has learned and incorporated Blue mana into itself
you have upwards of 30 creatures and must protect them in the format with players who consider board wipes mandatory
24 11 14 11 26 8 0 24 29 13 8 9 Main deck 59 cards (39 distinct) 1 1 1 Sheoldred, the Apocalypse 1 Elesh Norn // The Argent Etchings 1 1 1 Elas il-Kor, Sadistic Pilgrim 1 1 Sheoldred // The True Scriptures 1 1 1 1 1 Tekuthal, Inquiry Dominus 1 Jin-Gitaxias, Progress Tyrant 1 1 1 1 Vorinclex // The Grand Evolution 1 Zopandrel, Hunger Dominus 1 1 1 1 Ezuri, Stalker of Spheres 1 1 1 1 1 1 1 1 1 1 1 Invasion of Arcavios // Invocation of the Founders 4 9 6 5 Mana Curve Color Breakdown
In Draft and Sealed, combat is how the majority of games are won or lost, and depending on the format, its also a huge part of strategy
Again, minor controversy here as some people feel it's Green stealing from White's slice of the color pie