Ravnica Allegiance

Azorius Skyguard | Creature | Human Knight | Flying, first strike Creatures your opponents control get -1/-0. | Gabor Szikszai

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

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

Sphinx of New Prahv | Creature | Sphinx | Flying, vigilance Spells your opponents cast that target Sphinx of New Prahv cost {2} more to cast. | Sara Winters

Depose | Instant | | Tap target creature. Draw a card. | Sara Winters

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

Frilled Mystic | Creature | Elf Lizard Wizard | Flash When Frilled Mystic enters the battlefield, you may counter target spell. | Randy Vargas

Galloping Lizrog | Creature | Frog Lizard | Trample When Galloping Lizrog enters the battlefield, you may remove any number of +1/+1 counters from among creatures you control. If you do, put twice that many +1/+1 counters on Galloping Lizrog. | Lius Lasahido

Gyre Engineer | Creature | Vedalken Wizard | {T}: Add {G}{U}. | Anthony Palumbo

Sharktocrab | Creature | Shark Octopus Crab | {2}{G}{U}: Adapt 1. (If this creature has no +1/+1 counters on it, put a +1/+1 counter on it.) Whenever one or more +1/+1 counters are put on Sharktocrab, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step. | Jehan Choo

Incubation | Sorcery | | Look at the top five cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. | Mike Bierek

Sphinx of the Guildpact | Artifact Creature | Sphinx | Sphinx of the Guildpact is all colors. Flying Hexproof from monocolored (This creature can't be the target of monocolored spells or abilities your opponents control.) | Milivoj Ćeran