Celestial Flare | Instant | | Target player sacrifices an attacking or blocking creature. | Clint Cearley
Hallowed Moonlight | Instant | | Until end of turn, if a creature would enter the battlefield and it wasn't cast, exile it instead.
Draw a card. | Mike Bierek
Mighty Leap | Instant | | Target creature gets +2/+2 and gains flying until end of turn. | rk post
Disperse | Instant | | Return target nonland permanent to its owner's hand. | Ryan Yee
Negate | Instant | | Counter target noncreature spell. | Jeremy Jarvis
Psychic Rebuttal | Instant | | Counter target instant or sorcery spell that targets you.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, you may copy the spell countered this way. You may choose new targets for the copy. | Todd Lockwood
Send to Sleep | Instant | | Tap up to two target creatures.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, those creatures don't untap during their controllers' next untap steps. | Cynthia Sheppard
Turn to Frog | Instant | | Until end of turn, target creature loses all abilities and becomes a blue Frog with base power and toughness 1/1. | Warren Mahy
Fiery Conclusion | Instant | | As an additional cost to cast this spell, sacrifice a creature.
Fiery Conclusion deals 5 damage to target creature. | Paolo Parente
Ravaging Blaze | Instant | | Ravaging Blaze deals X damage to target creature.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, Ravaging Blaze also deals X damage to that creature's controller. | Aleksi Briclot
Smash to Smithereens | Instant | | Destroy target artifact. Smash to Smithereens deals 3 damage to that artifact's controller. | Pete Venters
Titanic Growth | Instant | | Target creature gets +4/+4 until end of turn. | Ryan Pancoast