Guilds of Ravnica

Inspiring Unicorn | Creature | Unicorn | Whenever Inspiring Unicorn attacks, creatures you control get +1/+1 until end of turn. | Even Amundsen

Murmuring Mystic | Creature | Human Wizard | Whenever you cast an instant or sorcery spell, create a 1/1 blue Bird Illusion creature token with flying. | Mark Winters

Undercity Necrolisk | Creature | Zombie Lizard | {1}, Sacrifice another creature: Put a +1/+1 counter on Undercity Necrolisk. It gains menace until end of turn. Activate only as a sorcery. (It can't be blocked except by two or more creatures.) | Tomasz Jedruszek

Golgari Raiders | Creature | Elf Warrior | Haste Undergrowth — Golgari Raiders enters the battlefield with a +1/+1 counter on it for each creature card in your graveyard. | David Palumbo

Truefire Captain | Creature | Human Knight | Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.) Whenever Truefire Captain is dealt damage, it deals that much damage to target player. | Chris Rallis

Conclave Cavalier | Creature | Centaur Knight | Vigilance When Conclave Cavalier dies, create two 2/2 green and white Elf Knight creature tokens with vigilance. | Tomasz Jedruszek

Nightveil Predator | Creature | Vampire | Flying, deathtouch Hexproof (This creature can't be the target of spells or abilities your opponents control.) | Darek Zabrocki

Crackling Drake | Creature | Drake | Flying Crackling Drake's power is equal to the total number of instant and sorcery cards you own in exile and in your graveyard. When Crackling Drake enters the battlefield, draw a card. | Victor Adame Minguez

Golgari Findbroker | Creature | Elf Shaman | When Golgari Findbroker enters the battlefield, return target permanent card from your graveyard to your hand. | Bram Sels

Rampaging Monument | Artifact Creature | Cleric | Trample Rampaging Monument enters the battlefield with three +1/+1 counters on it. Whenever you cast a multicolored spell, put a +1/+1 counter on Rampaging Monument. | Tyler Walpole