Animate Major Undead

Beginning at 7th level, your pursuit of knowledge has led to uncover the secrets to mastering undead of all sizes. You can now raise any corpse that is Huge or smaller of a monstrosity, humanoid, or beast with challenge rating 3 or lower can be animated. It keeps its original abilities and attacks, but loses any resistances, immunities, legendary actions, senses it had and gains the immunities and vulnerabilities of its type, skeleton or zombie. You can issue mental commands to the creature as the animate undead spell. You can only control one major undead at a time. This feature functions as the spell animate dead except where otherwise noted. You may use this feature on an existing undead you control to reassert your control over it. You must finish a long rest before you can use this feature again.

At level 11, you may animate a monstrosity, humanoid or beast with a challenge rating of 6 or lower.

At level 15, you may animate a monstrosity, humanoid or beast with a challenge rating of 9 or lower. In addition, a major undead now lasts until its hit points are reduced to 0.