The Right Fight

At the beginning of your upkeep if you control creatures named "Faervel, Wielder of Storms", "Mythanar, Death's Denial", "Onyx, the Hidden Shadow" and "Rune, Psionic Warrior", you win the game

{w}{u}{b}{r}{g}: Search your library for a Legendary Creature, reveal it, put it into your hand, then shuffle your library