The Sultai's ruthlessness leads them to use every resource at their disposal, even the dead
From the Rubble is a generic typal payoff that should see play across multiple decks, and Master of Dark Rites provides the type of mana acceleration that makes me wonder if it has any 60-card Constructed applications
Speaking of something horrible, you might think that many of the cards in this deck are not good, or bad. This is a matter of opinion, but not only is it also an objective falsehood, its an archaic way of looking at reality
Having the creature in play for a turn, with haste, is certainly powerful enough to be worthwhile
Its easily the most efficient extra-turn spell among the best blue cards MTG players can ever hope to add to their deck (its really quite expensive)
The only drawback here is that it's 10 to cast (10 generic mana)