Guilds of Ravnica

Righteous Blow | Instant | | Righteous Blow deals 2 damage to target attacking or blocking creature. | Izzy

Take Heart | Instant | | Target creature gets +2/+2 until end of turn. You gain 1 life for each attacking creature you control. | Lucas Graciano

Dazzling Lights | Instant | | Target creature gets -3/-0 until end of turn. Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) | Robbie Trevino

Necrotic Wound | Instant | | Undergrowth — Target creature gets -X/-X until end of turn, where X is the number of creature cards in your graveyard. If that creature would die this turn, exile it instead. | Randy Vargas

Might of the Masses | Instant | | Target creature gets +1/+1 until end of turn for each creature you control. | Alex Konstad

Integrity | Instant | | Target creature gets +2/+2 until end of turn. | Ben Maier

Status | Instant | | Target creature gets +1/+1 and gains deathtouch until end of turn. | Ben Wootten