Rakshasa Vizier - D Exiling your own graveyard to make an otherwise vanilla creature larger can be ok, but it's not generally what Sultai wants to do
Youll also get even more decks you can play right out of the box, stocking your card collection that you can build other decks from
While this card points to a monster whose name is "Dark Magician", it is unaffected by your opponent's card effects
Obviously if you have little to no spell cards in your deck, Curse of Darkness will work great
In addition, this special summons a level 4 monster for you to use next turn, as well as potentially weakens your opponents monsters by putting them into defense position
Virtue and Valor is Green/White, with a focus on enchanting and buffing creatures