Viril's Undead Amalgamate

Chose 4 allied Skeletons or Zombies within range that are within 5 feet of each other. The magic of this spell combines and rearranges your unholy thralls into a hulking abomination. If targeting Skeletons, use the Ogre Skeleton stat block, and for Zombies the Ogre Zombie stat block.

As a bonus action on your turn and each subsequent turn you can issue a verbal command to the Amalgam. You decide what action the creature will take and where it will move during its next turn, or you can issue a general command, such as to guard a particular chamber or corridor. If you issue no commands, the creature only defends itself against hostile creatures. Once given an order, the creature continues to follow it until its task is complete.

If you maintain concentration on this spell for the full duration the Amalgam becomes permanent and remains under your control until the Amalgam is dispelled, dies, or is solely targeted by the Animate Dead spell. If the Amalgam dies or if concentration on this spell is ended early, it crumbles into a large pile of bones or flesh and viscera and all comprising skeletons or zombies become deaminated. If the Amalgam is targeted by a successful Dispel Magic spell, the Amalgam decompiles into the comprising skeletons or zombies, the Amalgam's remaining hit points are split amongst the comprising undead evenly, rounded down. If the Amalgam is solely targeted by the Animate Dead spell, the caster of the spell assumes control of the Amalgam.