Overlord

Flying
{t}{2} put a Zerg creature from your hand onto the battlefield tapped.
{4} sacrifice Overlord: create an 0/4 creature token with Flying, Biological, Zerg, and Detector named "Overseer."
"Overlords provide control for your minions. As your forces grow in number, you must hatch more Overlords to control them."
- Daggoth