I have to say i was shocked initially to see people each of whom could have been a supermodel on the Earth i came from around me and doing normal ch.o.r.es.It didn't take me long to infer that i was in Marvel Universe cause i saw people shouting"Thor Thor Thor" and a

extremely buff looking Chris Hemsworth walking with his head held high along with the Warrior Three with him.This moment made me realise that i was in the MCU.

I still have the wishes i had asked for.I was highly intelligent as compared to the adults.To check whether i had instant mastery i did some chopping and found that though it took me a few hits at first and a lesson on wood chopping from my dad Asmund(forgot to introduce him in the start).to became quite adept at it.I was able to figue out where to hit and with how much force to hit the tree instinctively. Though it took me few shoots cause i did not have enough strength yet cause the trees at Asgard are much much stronger than those at Earth.

After a few more experiments i found out the restriction of my instant mastery.I need to have certain knowledge of that field.To explain easily I need to know the spells for the magic and the basis behind it to use it thought it would take me little effort to learn it and much less mana.(Author here:this does not mean he has learnt magic right now it was just an example to explain)

So i think what i have is not exactly instant mastery but easier learning and experience boost like in rpg.