The Conundrum of Bowls [Alchemy: Wilds of Eldraine]

(As this Saga enters and after your draw step add a lore counter. Sacrifice after III.)
I — Seek a card with mana value less than the number of cards in your hand.
II — Seek a card with mana value greater than the number of cards in your hand.
III — Count the number of cards in your hand. You may cast a spell with mana value equal to that number from your hand without paying its mana cost.