When you do cast a spell with convoke, you get to scry two, picking whatever card you want the most to leave on top or even tuck both of them to the bottom of your deck if you don't like either of them
7 Heart Of Kiran Heart of Kiran is another appealing Kaladesh plane, first introduced in the Aether Revolt set
Dragons of Tarkir (2015) had two nice variants of Card not found
You can even potentially win if you manage to put your win conditions as well as cheap mana sources into your hand with the cards you exiled with Necropotence
I understand that, but then I see all of these life-gaining cards played as well, such as creatures with life-gain when they enter the battlefield (ETB) or other spells
Buried Alive Bloodghast Read the Bones Necropotence Sinister Concoction Rotting Rats Worldspine Wurm Grave Titan Kozilek, the Butcher of Truth Ulamog, the Infinite Gyre While this deck is very powerful and impressively consistent it is not something you can easily look to draft, it is much more of a constructed deck