Dominaria

Blessing of Belzenlok | Instant | | Target creature gets +2/+1 until end of turn. If it's legendary, it also gains lifelink until end of turn. | Joe Slucher

Cast Down | Instant | | Destroy target nonlegendary creature. | Bastien L. Deharme

Dark Bargain | Instant | | Look at the top three cards of your library. Put two of them into your hand and the other into your graveyard. Dark Bargain deals 2 damage to you. | Tyler Jacobson

Fungal Infection | Instant | | Target creature gets -1/-1 until end of turn. Create a 1/1 green Saproling creature token. | Filip Burburan

Vicious Offering | Instant | | Kicker—Sacrifice a creature. (You may sacrifice a creature in addition to any other costs as you cast this spell.) Target creature gets -2/-2 until end of turn. If this spell was kicked, that creature gets -5/-5 until end of turn instead. | Anthony Palumbo