Ravnica Allegiance

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

Lawmage's Binding | Enchantment | Aura | Flash Enchant creature Enchanted creature can't attack or block, and its activated abilities can't be activated. | Mark Behm

Theater of Horrors | Enchantment | | At the beginning of your upkeep, exile the top card of your library. During your turn, if an opponent lost life this turn, you may play lands and cast spells from among cards exiled with Theater of Horrors. {3}{R}: Theater of Horrors deals 1 damage to target opponent or planeswalker. | Daarken

Rhythm of the Wild | Enchantment | | Creature spells you control can't be countered. Nontoken creatures you control have riot. (They enter the battlefield with your choice of a +1/+1 counter or haste.) | Tomasz Jedruszek