
Celestial Flare | Instant | | Target player sacrifices an attacking or blocking creature. | Clint Cearley

Enshrouding Mist | Instant | | Target creature gets +1/+1 until end of turn. Prevent all damage that would be dealt to it this turn. If it's renowned, untap it. | Howard Lyon

Mighty Leap | Instant | | Target creature gets +2/+2 and gains flying until end of turn. | rk post

Artificer's Epiphany | Instant | | Draw two cards. If you control no artifacts, discard a card. | Kieran Yanner

Bone to Ash | Instant | | Counter target creature spell.
Draw a card. | Clint Cearley

Calculated Dismissal | Instant | | Counter target spell unless its controller pays {3}.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, scry 2. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) | Karl Kopinski

Disperse | Instant | | Return target nonland permanent to its owner's hand. | Ryan Yee

Negate | Instant | | Counter target noncreature spell. | Jeremy Jarvis

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

Dark Dabbling | Instant | | Regenerate target creature. Draw a card. (The next time the creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.)
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, also regenerate each other creature you control. | Bastien L. Deharme

Touch of Moonglove | Instant | | Target creature you control gets +1/+0 and gains deathtouch until end of turn. Whenever a creature dealt damage by that creature dies this turn, its controller loses 2 life. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.) | Scott Murphy

Unholy Hunger | Instant | | Destroy target creature.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, you gain 2 life. | Lius Lasahido

Chandra's Fury | Instant | | Chandra's Fury deals 4 damage to target player or planeswalker and 1 damage to each creature that player or that planeswalker's controller controls. | Volkan Baǵa

Fiery Impulse | Instant | | Fiery Impulse deals 2 damage to target creature.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, Fiery Impulse deals 3 damage instead. | Daarken

Smash to Smithereens | Instant | | Destroy target artifact. Smash to Smithereens deals 3 damage to that artifact's controller. | Pete Venters

Titan's Strength | Instant | | Target creature gets +3/+1 until end of turn. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.) | Karl Kopinski

Aerial Volley | Instant | | Aerial Volley deals 3 damage divided as you choose among one, two, or three target creatures with flying. | Lake Hurwitz

Might of the Masses | Instant | | Target creature gets +1/+1 until end of turn for each creature you control. | Johann Bodin

Reclaim | Instant | | Put target card from your graveyard on top of your library. | Andrew Robinson

Titanic Growth | Instant | | Target creature gets +4/+4 until end of turn. | Ryan Pancoast

Vine Snare | Instant | | Prevent all combat damage that would be dealt this turn by creatures with power 4 or less. | Igor Kieryluk