Mystery Booster 2

Enchantment

When Duelists' Convocation International enters the battlefield, choose a 10-digit number at random and write it down.
Whenever you play a land or cast a spell, if it shares a mana value with one or more uncrossed digits in the chosen number, cross out one of those digits and draw a card. Then if all ten digits are crossed out, you win the game.

Duelists' Convocation International

Creature — Human Peasant

Each creature card in your hand has a {1}{G} Adventure sorcery named Fetch Herbs with "You gain 2 life." (You may cast it as the Adventure for {1}{G}. Then exile it, and you may cast the creature later from exile.)
Each creature card you cast from exile enters the battlefield with an additional +1/+1 counter on it.