Sorrow's Path's main effect is amusingly strange
Urza, Lord High Artificer does it all: It generates obscene amounts of mana, gives you an outlet for infinite mana, and even combos with cards like Winter Orb and Static Orb to lock your opponents out of the game
Though this spell relies on you having a significantly powerful non-human creature in play when it resolves, Return of the Wildspeaker can result in you drawing a significant number of cards
Every card has a casting cost, paid through Exerting cards in the Inkwell
Tezzeret, Master of the Bridge You could take any Tezzeret card, replace all the instance of artifact with dragon and come up with a completely functional Sarkhan card instead
Zero Iconics were pulled in our 192-pack sample, which is expected