i can't believe it's not a real word...

1. someone with an exceptional amount of multi-faceted skill
2. a creation requiring extraordinarily multi-faceted talent

usage examples:
gerald can fix every kind of car ever made - he's a mechanical ambidextrosity.

this ambidextrosity of a film came together through the collaboration of so many amazing artists.

NOTE: This should not be confused with ambidexterity (the quality of being ambidexterous), which is a real word, but has a significantly different meaning. I refuse to believe that ambidextrosity isn't a real word (even though I did make it up). According to a recent study, "ambidextrosity" makes way more sense than 87% of real words in the english language.