Devouring Light | Instant | | Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Exile target attacking or blocking creature. | Slawomir Maniak
Pillar of Light | Instant | | Exile target creature with toughness 4 or greater. | Erica Yang
Dissipate | Instant | | Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. | Tomasz Jedruszek
Polymorphist's Jest | Instant | | Until end of turn, each creature target player controls loses all abilities and becomes a blue Frog with base power and toughness 1/1. | Craig J Spearing
Necrobite | Instant | | Target creature gains deathtouch until end of turn. Regenerate it. (The next time that creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat. Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.) | Nils Hamm
Chord of Calling | Instant | | Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle. | Karl Kopinski
Hunter's Ambush | Instant | | Prevent all combat damage that would be dealt by nongreen creatures this turn. | David Palumbo