The Didact, Ender of Worlds

Discard your hand. Exile up to five cards
from your graveyard and draw a card for
each one.
Choose options until you total 4:
1. Create a 2/2 Foot soldier token.
2.Create a 4/4 Knight token.
4. Cast a Promethean card from your
graveyard without paying its mana cost.