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Celestial Flare | Instant | | Target player sacrifices an attacking or blocking creature. | Clint Cearley
Fortify | Instant | | Choose one —
• Creatures you control get +2/+0 until end of turn.
• Creatures you control get +0/+2 until end of turn. | Christopher Moeller
Pay No Heed | Instant | | Prevent all damage a source of your choice would deal this turn. | Adam Rex
Show of Valor | Instant | | Target creature gets +2/+4 until end of turn. | Anthony Palumbo
Cancel | Instant | | Counter target spell. | David Palumbo
Disperse | Instant | | Return target nonland permanent to its owner's hand. | Steve Ellis
Essence Scatter | Instant | | Counter target creature spell. | Jon Foster
Frost Breath | Instant | | Tap up to two target creatures. Those creatures don't untap during their controller's next untap step. | Mike Bierek
Negate | Instant | | Counter target noncreature spell. | Jeremy Jarvis
Altar's Reap | Instant | | As an additional cost to cast this spell, sacrifice a creature.
Draw two cards. | Donato Giancola
Vile Rebirth | Instant | | Exile target creature card from a graveyard. Create a 2/2 black Zombie creature token. | Erica Yang
Wring Flesh | Instant | | Target creature gets -3/-1 until end of turn. | Izzy
Chandra's Outrage | Instant | | Chandra's Outrage deals 4 damage to target creature and 2 damage to that creature's controller. | Christopher Moeller
Shock | Instant | | Shock deals 2 damage to any target. | Jon Foster
3.5 LSV
Smelt | Instant | | Destroy target artifact. | Zoltan Boros
Thunder Strike | Instant | | Target creature gets +2/+0 and gains first strike until end of turn. (It deals combat damage before creatures without first strike.) | Wayne Reynolds
Fog | Instant | | Prevent all combat damage that would be dealt this turn. | Jaime Jones
Giant Growth | Instant | | Target creature gets +3/+3 until end of turn. | Matt Cavotta
Naturalize | Instant | | Destroy target artifact or enchantment. | Tim Hildebrandt
Plummet | Instant | | Destroy target creature with flying. | Pete Venters
Ranger's Guile | Instant | | Target creature you control gets +1/+1 and gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.) | Steve Prescott
