Unbreakable Formation | Instant | | Creatures you control gain indestructible until end of turn.
Addendum — If you cast this spell during your main phase, put a +1/+1 counter on each of those creatures and they gain vigilance until end of turn. | Ben Wootten
Courageous Resolve | Instant | | Up to one target creature you control gains protection from each of your opponents until end of turn. Draw a card. (It can't be blocked, targeted, dealt damage, enchanted, or equipped by anything controlled by those players.)
Fateful hour — If you have 5 or less life, you can't lose life this turn, you can't lose the game this turn, and your opponents can't win the game this turn. | Matt Stewart
Courageous Resolve | Instant | | Up to one target creature you control gains protection from each of your opponents until end of turn. Draw a card. (It can't be blocked, targeted, dealt damage, enchanted, or equipped by anything controlled by those players.)
Fateful hour — If you have 5 or less life, you can't lose life this turn, you can't lose the game this turn, and your opponents can't win the game this turn. | Matt Stewart
Anguished Unmaking | Instant | | Exile target nonland permanent. You lose 3 life. | Liiga Smilshkalne
Mortify | Instant | | Destroy target creature or enchantment. | Ilker Yildiz