Ravnica Allegiance

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

Knight of the Last Breath | Creature | Giant Knight | {3}, Sacrifice another nontoken creature: Create a 1/1 white and black Spirit creature token with flying. Afterlife 3 (When this creature dies, create three 1/1 white and black Spirit creature tokens with flying.) | Milivoj Ćeran

Mortify | Instant | | Destroy target creature or enchantment. | Anthony Palumbo

Pitiless Pontiff | Creature | Vampire Cleric | {1}, Sacrifice another creature: Pitiless Pontiff gains deathtouch and indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.) | Yongjae Choi

Syndicate Guildmage | Creature | Human Cleric | {1}{W}, {T}: Tap target creature with power 4 or greater. {4}{B}, {T}: Syndicate Guildmage deals 2 damage to target opponent or planeswalker. | Josh Hass

Consecrate // Consume | Instant // Sorcery | | Exile target card from a graveyard. Draw a card. // Target player sacrifices a creature with the greatest power among creatures they control. You gain life equal to its power. | Igor Kieryluk

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