Ravnica Allegiance

Senate Courier | Creature | Bird | Flying {1}{W}: Senate Courier gains vigilance until end of turn. | Johann Bodin

Absorb | Instant | | Counter target spell. You gain 3 life. | Izzy

Deputy of Detention | Creature | Vedalken Wizard | When Deputy of Detention enters the battlefield, exile target nonland permanent an opponent controls and all other nonland permanents that player controls with the same name as that permanent until Deputy of Detention leaves the battlefield. | G-host Lee

Dovin, Grand Arbiter | Legendary Planeswalker | Dovin | +1: Until end of turn, whenever a creature you control deals combat damage to a player, put a loyalty counter on Dovin, Grand Arbiter. −1: Create a 1/1 colorless Thopter artifact creature token with flying. You gain 1 life. −7: Look at the top ten cards of your library. Put three of them into your hand and the rest on the bottom of your library in a random order. | Kieran Yanner

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

Azorius Locket | Artifact | | {T}: Add {W} or {U}. {W/U}{W/U}{W/U}{W/U}, {T}, Sacrifice Azorius Locket: Draw two cards. | Craig J Spearing