A couple hours

She teaches you how to cast the spell. "Ok, now practice by trying to summon a frog." You do so. You summon a tadpole. "Wow, you suck at this." You get flusted. "This is my first time casting a spell ever." She chuckles. "Don't suffocate the tadpole just because you're mad at me." You panic as you remember the tadpole and send it back.

She continues to talk in your head. "Sorry about mocking you. I'm not used to talking to someone I'm supposed to be nice to before. I'll try to be better. Still, a baby unicorn horn won't work. Keep practicing until you can summon a full grown frog." You summon a few more tadpoles before you finely summon a tadpole with tiny legs. After that each time you summon, the tadpoles are a little bit closer to being frogs. After 1 more hour you finally summon a full grown frog. You do so a couple more time to make sure you don't make a mistake when summoning the unicorn.

You ask Cosmo a question. "Do you think I'm ready?" You feel a pleased sensation beaming into your brain. "Definitely. I'm actually really impressed with you. I wonder if your Equestria counterpart is a unicore himself." You're flabbergasted. "What?" She chuckles at herself. "Oops, did I forget to tell you? The reason Earth has cracks leading to Equestria is because it is a mirror of Equestria. Every human on Earth has a copy who is a pony in Equestria. Either a Earth Pony wich are super strong, a Pegasus wich can fly and manipulate the weather, a Unicorn that can cast spells or an Alicorn wich is pretty much a god."

You wonder if your pony self has a better life then the human you dose.

You prepare to summon the unicorn. Cosmo speak to you in your head. "Once you feel my magic coursing through you, cast the spell. You'll have an easier time summoning a unicorn that is trying to escape from something. So think about saving a unicorn from something while you cast the spell. You could be saving a unicorn from a monster, but you might save a dangerous crimminal from the police. So be prepared for this to get dangerous."

You get ready. If you get this spell wrong, you'll have to wait 24 hours before you can try again. You feel a rush of adrenaline as you're filled with much more magic then before. You cast the spell and quickly grab your saw incase this unicorn is a dangerous criminal.

However you're stopped in your tracks when you don't see a horse with a horn, but the most beutiful woman you have ever seen in your life rapped in tenticals. Her skin is yellow, her hair is like fire and shes completely naked. However what draws you in the mosts is her peircing green eyes. You can't look away.

She screams when she sees your saw. You drop it. You run to your bedroom and grab a blanket. You run back to your basement and cover her to give her some decentcy. She speaks to you in a paniced voice. "Why am I a hairless monky rapped in tenticals!?" You talk to Cosmo in your head. "If she's calling herself a hairless monky, dose that mean she's a unicorn and I messed up the spell?"

She thinks a little before answering. "No. A creature of incredible power changed how traveling between the realm of Magic and the realm of Chaos. Made it so if a creature travels from Equestria to Earth, they transform into there Earth counterpart species and vice versa. It's impossible for you to create a magic wand unless you go to Equestria. Send her back."