Become the Dungeon Master

This spell can't be countered.
This enchantment can't leave the battlefield for
any reason.
Your goal is no longer to win the game, but
rather for your opponents to enjoy the game as
much as possible.
When you lose the game, any players still alive all
win together.
You may play cards from your library, exile,
graveyard, hand, or from outside of the game
without paying their mana costs.