The Moo誰OCULARS were always intended to be a simple device. Interpret the holder's whims, instantly apply it to living creatures the holder sees through it. Growing, removing, and modifying living creatures was far from challenging, and stitching the small gaps in reality that such small changes make was the bulk of its purpose.
When more outlandish demands are made, the device might shut down for a few minutes, hours, or days after fulfilling it to recover. Perpetual curses or enchantments, creation of new life from nothing, and other blatant acts that defy reality were best left to actual mages, who could build complex structures over time, without great cost to themselves. For a simple device to instantly do what might take a real mage months, it would need to eke out every bit of value it had and cut every corner it could.
This is why when the holder raised the Moo誰OCULARS to their eyes, it violently detonated.
* * *
The explosion knocked you backwards, leaving you disoriented on the floor. Your slaves are already at your side, gingerly lifting you to a seated position as you try to make sense of what just happened as your body continues to ache.
You shake yourself to get reoriented. Test failed, there's apparently some limits on your godly powers.
First, you don't need your slaves this close. "M'm Fime, pleith-" You stop yourself, noticing you're slurring your words really badly. No, it's like your tongue is swollen. You stick it out and attempt to feel it, but there is no hand that comes. You attempt to get up, but find your legs pinned down.
Looking down, you recoil in horror. You're now an anthropomorphic cow, and your udder isn't just massive, it's growing as you watch it. It doesn't take long to realize this is the source of that dull ache, and as you continue to regain your full awareness, that ache is quickly turning into pain.
Oh god, the Moo誰OCULARS had turned you into the wretched creature you'd wanted to turn that lady into. You needed to find them and... Wait, you don't have hands to use them any more. No matter, you have perfectly loyal slaves to use them on you. Wait, what if they're the one spared the reality shift, or what if they use it to switch this master-slave relationship in their favor? Maybe you could lay them on the ground and look at yourself in a mirror?
Your thoughts are interrupted as your udder makes a glugging noise, visibly expanding a few inches. You don't have time to dwell on this, you need to fix it now! Careful with your pronunciation, you turn to your nearest slave, Bill. "Stand Moo-ee up and find those Mm...Binoculars I was Mm...using."
"Yes ma'am." Bill grabs your sides just under where your arms would be, then life you to a standing position. Unfortunately, your newly-deformed legs and massive udder make balancing a nightmare, and you quickly relegate yourself to sitting on a bench instead of helping with the search.