House and Preston will let you customize the deck with non-Fallout cards most freely, in either dice-rolling or enchantress, but otherwise The Master, Transcendent is probably the most splashable in general for Sultai decks
It can swarm and win quickly like an aggressive deck, it can control the pace of the game, grind out value and operate like a midrange or a control deck
Next, we have Brainstorm and Howling Mine
But Keranos has only ever really found itself in five color decks which care about gods or indestructible creatures up to now, and with the whole Magic cardpool available, he's never the obvious choice
Overall, Fabled does a lot to move the game forward and pave the way for future sets
Appendix of Top Ten Block Lists Did you enjoy our throwback list of the best cards of yore