Virulent Plague
Dragons of Tarkir — uncommon
Enchantment
Virulent Plague rulings:
2015-02-25: If an effect creates a creature token that normally has toughness 2 or less, it will enter the battlefield with toughness 0 or less, be put into its owner’s graveyard, and then cease to exist. Any abilities that trigger when a creature enters the battlefield or dies will trigger.