Thopter Spy Network [mana]2UU[/mana]
Enchantment
Rare
At the beginning of your upkeep, if you control an artifact, put a 1/1 colorless Thopter artifact creature token with flying onto the battlefield.
Whenever one or more artifact creatures you control deals combat damage to a player, draw a card.
Source: http://magic.wizards.com/en/articles/ar ... 2015-06-29