Since most aristocrat decks have creatures that want to die, Apprentice allows us to trigger those effects while creating a 2/2 creature token
There can also be too much of a good thing in this category do not take this deck building step as an endorsement to replace all basic lands in your deck there are plenty of cards that can prey on you for pursuing this route like Back to Basics, Ruination, and Price of Progress
At the beginning of the next end step, if any of those cards remain exiled, put them into your graveyard, then create a 0/1 colorless Eldrazi Spawn creature token for each card put into your graveyard this way
Saheeli 1/10 While untested Saheeli does seem rather too weak for the deck
The Planeswalker Deck features a ready-to-play 60-card deck with a foil premium Planeswalker card, 2 Rivals of Ixalan Booster Packs , a strategy insert, and a learn-to-play guide
Let me know in the comments section, or lets discuss it over Draftsim Discord