I Play Standard Too

Exile any number of Magic: The Gathering
Booster Pack, then exile this card with X
card counters on it, where X is the number
of exiled booster packs.
At the beginning of your upkeep, remove a card
counter and crack open an exiled Magic: The
Gathering Booster Pack. You may cast a card
from it without paying its mana cost, exile the rest
of the booster pack.