Guilds of Ravnica

Roc Charger | Creature | Bird | Flying Whenever Roc Charger attacks, target attacking creature without flying gains flying until end of turn. | Titus Lunter

Plaguecrafter | Creature | Human Shaman | When Plaguecrafter enters the battlefield, each player sacrifices a creature or planeswalker. Each player who can't discards a card. | Anna Steinbauer

Smelt-Ward Minotaur | Creature | Minotaur Warrior | Whenever you cast an instant or sorcery spell, target creature an opponent controls can't block this turn. | Wisnu Tan

District Guide | Creature | Elf Scout | When District Guide enters the battlefield, you may search your library for a basic land card or Gate card, reveal it, put it into your hand, then shuffle. | Tianhua X

Ledev Champion | Creature | Elf Knight | Whenever Ledev Champion attacks, you may tap any number of untapped creatures you control. Ledev Champion gets +1/+1 until end of turn for each creature tapped this way. {3}{G}{W}: Create a 1/1 white Soldier creature token with lifelink. | Daarken

Wee Dragonauts | Creature | Faerie Wizard | Flying Whenever you cast an instant or sorcery spell, Wee Dragonauts gets +2/+0 until end of turn. | Greg Staples

Ochran Assassin | Creature | Elf Assassin | Deathtouch All creatures able to block Ochran Assassin do so. | Anna Steinbauer