Army of the Dead

This spell can only be casted at night, during the time you cast the spell you are in a deep meditation and are considered unconscious for the full time you need to cast the spell. While you meditate threads of dark power leap from the ground and start to consume the corpses or skeletons and then reform into a humanoid form. up to 50 undead creatures immediately rise up. You decide whether the undeads rise as undying soldiers (they lack the turn resistance feature) or as skeleton archers, or you can decide how many rise of each type.

You can use a bonus action to mentally command the creatures you make with this spell, issuing the same command to all of them. To receive the command, a creature must be within 120 feet of you. You decide what action the creatures will take and where they will move during their next turn, or you can issue a general command, such as to guard a chamber or passageway against your foes. If you issue no commands, the creatures do nothing except defend themselves against hostile creatures. Once given an order, the creatures continue to follow it until their task is complete.

The creatures are under your control for the next two days, after that much time has passed the undeads turn to dust and disappear. You can cast the spell again before the two days have passed without needing the material components, in this way you can keep the undeads active and under your control for two more days, note casting the spell this way doesn't replace any undead that might have been destroyed in the meantime.

If you cast this spell on the same group of undead for six month, they will be permanently bound to you until destroyed, without need to cast the spell on them again.