Phalanx Formation | Instant | | Strive — This spell costs {1}{W} more to cast for each target beyond the first.
Any number of target creatures each gain double strike until end of turn. (They deal both first-strike and regular combat damage.) | Dan Scott
Reprisal | Instant | | Destroy target creature with power 4 or greater. It can't be regenerated. | Raymond Swanland
Hour of Need | Instant | | Strive — This spell costs {1}{U} more to cast for each target beyond the first.
Exile any number of target creatures. For each creature exiled this way, its controller creates a 4/4 blue Sphinx creature token with flying. | Jesper Ejsing
Kiora's Dismissal | Instant | | Strive — This spell costs {U} more to cast for each target beyond the first.
Return any number of target enchantments to their owners' hands. | Mathias Kollros
Nightmarish End | Instant | | Target creature gets -X/-X until end of turn, where X is the number of cards in your hand. | Willian Murai
Ritual of the Returned | Instant | | Exile target creature card from your graveyard. Create a black Zombie creature token. Its power is equal to that card's power and its toughness is equal to that card's toughness. | Zack Stella
Riddle of Lightning | Instant | | Choose any target. Scry 3, then reveal the top card of your library. Riddle of Lightning deals damage equal to that card's mana value to that permanent or player. | Daarken
Colossal Heroics | Instant | | Strive — This spell costs {1}{G} more to cast for each target beyond the first.
Any number of target creatures each get +2/+2 until end of turn. Untap those creatures. | Seb McKinnon
Consign to Dust | Instant | | Strive — This spell costs {2}{G} more to cast for each target beyond the first.
Destroy any number of target artifacts and/or enchantments. | Andreas Rocha
Solidarity of Heroes | Instant | | Strive — This spell costs {1}{G} more to cast for each target beyond the first.
Choose any number of target creatures. Double the number of +1/+1 counters on each of them. | Eric Deschamps