The Gamblers Paradise

Reveal this card at the start of the game before shuffling. This card enters the battlefield before the game starts.

You don't draw on your upkeep. Instead, roll
5 d20 dice. The sum of the die is the number
of cards you count downwards in your library from the top. Play that card. If the sum exceeds the size of your library, remove a d20 and roll again. All cards past the sum count get reshuffled into your library. Once the last dice
is removed, play one spell for free each turn.