Ravnica Allegiance

Faerie Duelist | Creature | Faerie Rogue | Flash Flying When Faerie Duelist enters the battlefield, target creature an opponent controls gets -2/-0 until end of turn. | Yongjae Choi

Persistent Petitioners | Creature | Human Advisor | {1}, {T}: Target player mills a card. Tap four untapped Advisors you control: Target player mills twelve cards. A deck can have any number of cards named Persistent Petitioners. | Jason Rainville

Sage's Row Savant | Creature | Vedalken Wizard | When Sage's Row Savant enters the battlefield, scry 2. | Bastien L. Deharme

Wall of Lost Thoughts | Creature | Wall | Defender When Wall of Lost Thoughts enters the battlefield, target player mills four cards. | Adam Paquette

Lavinia, Azorius Renegade | Legendary Creature | Human Soldier | Each opponent can't cast noncreature spells with mana value greater than the number of lands that player controls. Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell. | Steven Belledin

Senate Guildmage | Creature | Human Wizard | {W}, {T}: You gain 2 life. {U}, {T}: Draw a card, then discard a card. | G-host Lee

Biomancer's Familiar | Creature | Mutant | Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana. {T}: The next time target creature adapts this turn, it adapts as though it had no +1/+1 counters on it. | Izzy

Combine Guildmage | Creature | Merfolk Wizard | {1}{G}, {T}: This turn, each creature you control enters the battlefield with an additional +1/+1 counter on it. {1}{U}, {T}: Move a +1/+1 counter from target creature you control onto another target creature you control. | Yeong-Hao Han

Hydroid Krasis | Creature | Jellyfish Hydra Beast | When you cast this spell, you gain half X life and draw half X cards. Round down each time. Flying, trample Hydroid Krasis enters the battlefield with X +1/+1 counters on it. | Jason Felix