Dominaria United

Join Forces | Instant | | Untap up to two target creatures. They each get +2/+2 until end of turn. | Aurore Folny

Ertai's Scorn | Instant | | This spell costs {U} less to cast if an opponent cast two or more spells this turn. Counter target spell. | Alex Negrea

Joint Exploration | Instant | | Kicker {G} (You may pay an additional {G} as you cast this spell.) Scry 2, then draw a card. If this spell was kicked, you may put a land card from your hand onto the battlefield. | Zezhou Chen

Protect the Negotiators | Instant | | Kicker {W} (You may pay an additional {W} as you cast this spell.) If this spell was kicked, create a 1/1 white Soldier creature token. Counter target spell unless its controller pays {1} for each creature you control. | Dominik Mayer

Rona's Vortex | Instant | | Kicker {2}{B} (You may pay an additional {2}{B} as you cast this spell.) Return target creature or planeswalker you don't control to its owner's hand. If this spell was kicked, put that permanent on the bottom of its owner's library instead. | Dominik Mayer

Cut Down | Instant | | Destroy target creature with total power and toughness 5 or less. | Dominik Mayer

Fires of Victory | Instant | | Kicker {2}{U} (You may pay an additional {2}{U} as you cast this spell.) If this spell was kicked, draw a card. Fires of Victory deals damage to target creature or planeswalker equal to the number of cards in your hand. | Sidharth Chaturvedi

Hurloon Battle Hymn | Instant | | Kicker {W} (You may pay an additional {W} as you cast this spell.) Hurloon Battle Hymn deals 4 damage to target creature or planeswalker. If this spell was kicked, you gain 4 life. | Dominik Mayer

Twinferno | Instant | | Choose one — • When you cast your next instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy. • Target creature you control gains double strike until end of turn. | Justyna Gil

Warhost's Frenzy | Instant | | Kicker {B} (You may pay an additional {B} as you cast this spell.) Creatures you control get +2/+0 until end of turn. If this spell was kicked, whenever a creature you control dies this turn, draw a card. | Igor Grechanyi

Strength of the Coalition | Instant | | Kicker {2}{W} (You may pay an additional {2}{W} as you cast this spell.) Target creature you control gets +2/+2 until end of turn. If this spell was kicked, put a +1/+1 counter on each creature you control. | Justine Cruz

Tail Swipe | Instant | | Choose target creature you control and target creature you don't control. If you cast this spell during your main phase, the creature you control gets +1/+1 until end of turn. Then those creatures fight each other. (Each deals damage equal to its power to the other.) | Ângelo Bortolini

Tear Asunder | Instant | | Kicker {1}{B} (You may pay an additional {1}{B} as you cast this spell.) Exile target artifact or enchantment. If this spell was kicked, exile target nonland permanent instead. | Dave Kendall