Guilds of Ravnica

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

Sumala Woodshaper | Creature | Elf Druid | When Sumala Woodshaper enters the battlefield, look at the top four cards of your library. You may reveal a creature or enchantment card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. | Sara Winters

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

Rhizome Lurcher | Creature | Fungus Zombie | Undergrowth — Rhizome Lurcher enters the battlefield with a number of +1/+1 counters on it equal to the number of creature cards in your graveyard. | Mathias Kollros

Undercity Uprising | Sorcery | | Creatures you control gain deathtouch until end of turn. Then target creature you control fights target creature you don't control. (Each deals damage equal to its power to the other.) | Magali Villeneuve

Vraska, Golgari Queen | Legendary Planeswalker | Vraska | +2: You may sacrifice another permanent. If you do, you gain 1 life and draw a card. −3: Destroy target nonland permanent with mana value 3 or less. −9: You get an emblem with "Whenever a creature you control deals combat damage to a player, that player loses the game." | Magali Villeneuve