Create Monsterous Undead

You can cast this spell only at night. Choose at least 1 corpse of a monstrous creature within range that was of a CR rating equal to or lesser then that of the one you are trying to create.  Example a CR 5 monster could become a beholder or a weaker thunderbeast skeleton. Another example is a CR 20 monster could become a nightwalker.

The Undead you create with this spell take commands mentally as long as they are within 120ft of you or can hear you if a effect should block your mental link. The undead can perform complex or simple commands, able to carry out tasks and return independently. If attacked a undead will defend it's self and if left to it's own devices they will usually guard the area they were left, but they may start to act like actual undead of that kind if left without orders for to long. The average is 1d4 +1 months. If left to their own devices they will endeavor not to muddle in their creators plans willingly, some may even seek favor with their creator only to be released from undeath or hopefully receive a reward for their loyalty.

The creature is under your control for 1d4 +1 months. To maintain control of the creature for another 1d4 +1, you must cast this spell on the creature before the current period ends. This use of the spell reasserts your control over up to three creatures you have animated with this spell, rather than animating new ones.