Control <monster> by Voice: This skill allows the monster to control the type of monster named by voice commands. The control exerted is as Enslavement, but may not be cured or avoided. This skill is a Greater Command effect. Creatures with this ability may not be controlled by another creature with the same type of control ability. For example, a greater liche with “Control Greater Undead by Voice” could not control another greater liche or a dread lord. A tengu could not control a goblin king, because they both have “Control Goblinoid by Voice.” Control <monster> by Voice can be used to control lesser creatures of that type only, as denoted by their “rank”. Some monsters may have “Control Greater <monster>” which would allow any rank to be controlled.