Lethal Vapors [Scourge] Sliver Saprolings you control get +2/+2

Saprolings you control get +2/+2 as long as you have the city's blessing

Set: Kaladesh Inventions Type: Artifact Rarity: Mythic Cost: {1} As Pithing Needle enters the battlefield

Set: Vanguard Series Type: Vanguard Rarity: Rare Creatures you control get +0/+2

Set: Arabian Nights Type: Creature — Djinn Rarity: Rare Cost: {R}{R}{R} Whenever Mijae Djinn attacks

Lethal Vapors [Scourge] Sliver Saprolings you control get +2/+2Set: Scourge Type: Enchantment Rarity: Rare Cost: {2}{B}{B} Whenever a creature enters the battlefield, destroy it. {0}: Destroy Lethal Vapors. You skip your next turn. Any player may activate this ability. The vapors infiltrate every crevice, poison every lung, and snuff out every life.