Acolyte's Reward | Instant | | Prevent the next X damage that would be dealt to target creature this turn, where X is your devotion to white. If damage is prevented this way, Acolyte's Reward deals that much damage to any target. (Each {W} in the mana costs of permanents you control counts toward your devotion to white.) | Slawomir Maniak
Hold at Bay | Instant | | Prevent the next 7 damage that would be dealt to any target this turn. | Nils Hamm
Crypsis | Instant | | Target creature you control gains protection from creatures your opponents control until end of turn. Untap it. | Daarken
Nullify | Instant | | Counter target creature or Aura spell. | Adam Paquette
Thassa's Rebuff | Instant | | Counter target spell unless its controller pays {X}, where X is your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.) | Lucas Graciano
Bile Blight | Instant | | Target creature and all other creatures with the same name as that creature get -3/-3 until end of turn. | Vincent Proce
Fall of the Hammer | Instant | | Target creature you control deals damage equal to its power to another target creature. | Adam Paquette
Rise to the Challenge | Instant | | Target creature gets +2/+0 and gains first strike until end of turn. | Anthony Palumbo
Searing Blood | Instant | | Searing Blood deals 2 damage to target creature. When that creature dies this turn, Searing Blood deals 3 damage to the creature's controller. | Daniel Ljunggren
Mortal's Resolve | Instant | | Target creature gets +1/+1 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) | Svetlin Velinov
Unravel the Aether | Instant | | Choose target artifact or enchantment. Its owner shuffles it into their library. | Jung Park