Ravnica Allegiance

Angelic Exaltation | Enchantment | | Whenever a creature you control attacks alone, it gets +X/+X until end of turn, where X is the number of creatures you control. | John Severin Brassell

Civic Stalwart | Creature | Elephant Soldier | When Civic Stalwart enters the battlefield, creatures you control get +1/+1 until end of turn. | Gabor Szikszai

Rally to Battle | Instant | | Creatures you control get +1/+3 until end of turn. Untap them. | Ben Wootten

Smothering Tithe | Enchantment | | Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") | Mark Behm

Spirit of the Spires | Creature | Spirit | Flying Other creatures you control with flying get +0/+1. | Yeong-Hao Han

Syndicate Messenger | Creature | Bird | Flying Afterlife 1 (When this creature dies, create a 1/1 white and black Spirit creature token with flying.) | Viktor Titov

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

Sphinx's Insight | Instant | | Draw two cards. Addendum — If you cast this spell during your main phase, you gain 2 life. | Scott Murphy

Senate Griffin | Creature | Griffin | Flying When Senate Griffin enters the battlefield, scry 1. | Lucas Graciano

Basilica Bell-Haunt | Creature | Spirit | When Basilica Bell-Haunt enters the battlefield, each opponent discards a card and you gain 3 life. | Yeong-Hao Han

Kaya's Wrath | Sorcery | | Destroy all creatures. You gain life equal to the number of creatures you controlled that were destroyed this way. | Victor Adame Minguez

Seraph of the Scales | Creature | Angel | Flying {W}: Seraph of the Scales gains vigilance until end of turn. {B}: Seraph of the Scales gains deathtouch until end of turn. Afterlife 2 (When this creature dies, create two 1/1 white and black Spirit creature tokens with flying.) | Magali Villeneuve

Teysa Karlov | Legendary Creature | Human Advisor | If a creature dying causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time. Creature tokens you control have vigilance and lifelink. | Magali Villeneuve