Ixalan

Costly Plunder | Instant | | As an additional cost to cast this spell, sacrifice an artifact or creature. Draw two cards. | Ben Maier

Dark Nourishment | Instant | | Dark Nourishment deals 3 damage to any target. You gain 3 life. | Josh Hass

Skulduggery | Instant | | Until end of turn, target creature you control gets +1/+1 and target creature an opponent controls gets -1/-1. | Deruchenko Alexander

Vanquish the Weak | Instant | | Destroy target creature with power 3 or less. | David Palumbo

Vraska's Contempt | Instant | | Exile target creature or planeswalker. You gain 2 life. | Clint Cearley