Both Entreat the Angels and Jace, the Mind Sculptor do not provide enough value for the high price tag of theirs to warrant as much space in the deck after game 1
His focus will be on scrying through your deck and making big spells much cheaper to cast, along with creating a bunch of little faerie dragons
But that was before Atraxa, Grand Unifier was released
The best aspect of this card is that in a dragon deck, you often get two dragons for one
This used to be different, but Magic fans found a way to exploit the rules, allowing costly, powerful spells like Tibalt, Cosmic Impostor, to be played for free
This list is based on the competitive side of things, looking at the cards that have had the biggest cross-format impact, but especially in Standard, hot on the heels of the World Championships