The Brothers' War

Soul Partition | Instant | | Exile target nonland permanent. For as long as that card remains exiled, its owner may play it. A spell cast by an opponent this way costs {2} more to cast. | Kekai Kotaki

Hurkyl's Final Meditation | Instant | | As long as it's not your turn, this spell costs {3} more to cast. Return all nonland permanents to their owner's hands. End the turn. (Exile all spells and abilities from the stack, including this card. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.) | Nephelomancer

Urza's Command | Instant | | Choose two — • Creatures you don't control get -2/-0 until end of turn. • Create a tapped Powerstone token. • Create a tapped 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control." • Scry 1, then draw a card. | Dominik Mayer

Hostile Negotiations | Instant | | Exile the top three cards of your library in a face-down pile, then exile the next top three cards of your library in another face-down pile. Look at the cards in each pile, then turn a pile of your choice face up. An opponent chooses one of those piles. Put all cards in the chosen pile into your hand and the rest into your graveyard. You lose 3 life. | David Auden Nash