Dominaria United

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

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

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