Ravnica Allegiance

Forbidding Spirit | Creature | Spirit Cleric | When Forbidding Spirit enters the battlefield, until your next turn, creatures can't attack you or planeswalkers you control unless their controller pays {2} for each of those creatures. | Ryan Yee

Ministrant of Obligation | Creature | Human Cleric | Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.) | Bastien L. Deharme

Dovin's Acuity | Enchantment | | When Dovin's Acuity enters the battlefield, you gain 2 life and draw a card. Whenever you cast an instant spell during your main phase, you may return Dovin's Acuity to its owner's hand. | Bastien L. Deharme

High Alert | Enchantment | | Each creature you control assigns combat damage equal to its toughness rather than its power. Creatures you control can attack as though they didn't have defender. {2}{W}{U}: Untap target creature. | Daarken

Mortify | Instant | | Destroy target creature or enchantment. | Anthony Palumbo