Seek Bolas's Counsel
{U}{B}{R}
Sorcery
Choose one at random --
* You get an emblem with "At the beginning of your upkeep, pay {U}{B}{R}. If you don't, you lose the game."
* Each player discards their hand.
* Planeswalk to Pools of Becoming. (Once there, you can roll the planar die only if you're playing Planechase.)
* For each opponent, exile cards from the top of their library until you exile a nonland card. You may cast those cards without paying their mana costs.
* Destroy all creatures and non-Bolas planeswalkers.
* You get an emblem with "You can cast nonland cards from your sideboard."