Dr. Bones' Puppet Show

You touch one corpse, or pile of bones, and animate them and control them like puppets up to a range of 20x your Wizard Level.

You can spend your Bonus Action to give them simple commands, such as "move there," or "stand here," or you can use your Action to take control of them and fine tune their motor skills. 
Any attack they make has a -10 to hit, and they cannot cast any spells. However, they can make any other action; treat them like a more tangible version of "unseen servant," only they are clearly visible, and give off a rather pungent aroma. 

You can move their mouths, fingers, and such (with an action), so it is possible—through a combination of spells—that maybe you could have a conversation through the corpse. Though, when you cast this spell at higher levels, and animate multiple bodies, you can choose which corpse you specifically want to animate, while giving the rest general commands. Animated a slew of dead guards, and having them all walk their patrols is a great way to hide the fact that you've... *ahem...* well, killed all the guards.

—When an animated corpse takes damage, you make a Constitution Saving throw to maintain concentration on that specific body. If you fail, it falls limp and you take 1d12 Necrotic Damage. If not, then it remains standing, unless you choose to stop concentrating on it, (to maybe make it's death look convincing?) When you take damage in this way, it does not cause you to have to make a Constitution Save to maintain Concentration on the spell itself.
If you succeed the save, but the zombie/skeleton's hit points are reduced to 0, then the undead falls limp.

At Higher Levels:
—For each level 3rd level and higher, you can animate 2 additional corpses/piles of bones. When casted as a 6th level spell or higher, the corpses no longer have a -10 to hit with attacks, but instead use their monster stats (and any other bonus that they may have due to your features). Additionally, when cast at 9th level, you may target a number of corpses/piles of bones equal to your Intelligence Score.