Altron, Assembly King

Altron, Assembly King costs {1} less to cast for each Assembly-Worker you control.
Assembly-Workers you cast cost {2} less to cast, get +1/+1, and gain Haste and Trample.
The manufactures gave him full sentience, thinking it would help him figure out quicker ways to do his work. Instead, he led a revolt against them. This was worrying to the citizens, although it was not at all surprising.