The 2015 game expansion for Magic: The Gathering was called Dissension. This expansion has 160 cards and it has 3 prebuilt theme card decks. As you might expect, Simic Mutology is one of these decks, each containing 60 cards.
This deck focuses on bigger, weirder, and nastier monsters, and it's you who will create them. Perhaps your opponents will get scared and abandon the battle, thus you win.
This deck is a bi-color one. Its cards use either blue or green as card-frame. Make sure to look out for the random premium basic land card from Ravnica: City of Guilds included in this deck.
Simic Mutology Decklist: