Zealous Servitor

Soulbond, vigilance
Zealous Servitor cannot attack unless the creature it is paired with becomes tapped this turn, or if it is not paired with another creature.
"Oh, it obeys blindly to its master now, eh ? Time for revenge, in the name of all the excruciating trouble
you put us in, you measly, lying, stinkin' dwarf !"
- Grayvan Klenn, to Barmin.