Efficient Construction | Enchantment | | Whenever you cast an artifact spell, create a 1/1 colorless Thopter artifact creature token with flying. | Jonas De Ro
Gremlin Infestation | Enchantment | Aura | Enchant artifact
At the beginning of your end step, Gremlin Infestation deals 2 damage to enchanted artifact's controller.
When enchanted artifact is put into a graveyard, create a 2/2 red Gremlin creature token. | Slawomir Maniak