Jace, Architect of Thought
{2}{U}{U}
Legendary Planeswalker -- Jace
4
[+1]: Until your next turn, whenever a creature an opponent controls attacks, it gets -1/-0 until end of turn.
[-2]: Reveal the top three cards of your library. An opponent separates those cards into two piles. Put one pile into your hand and the other on the bottom of your library in any order.
[-8]: For each player, search that player's library for a nonland card and exile it, then that player shuffles. You may cast those cards without paying their mana costs.
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."