Monastery Mentor One of Magic's best prowess cards, Monastery Mentor is an incredible win condition in formats like Legacy and Vintage where you can cast lots of spells for free, replacing old cards like Quirion Dryad in these decks
Yes, you
And it flies and has the right toughness, but it's a bit harder to cast with triple Blue and may not be castable when you are on six mana, but it's still pretty synergetic here
The trigger event doesn't have to specifically refer to "creatures." In these cases, the trigger event may also refer to something being "put into a graveyard from the battlefield." For example, if the equipped creature or an emblem you own has an ability that triggers "whenever an artifact is put into a graveyard from the battlefield," that ability would trigger twice if an artifact creature died
Of those 36 playables you should split it down the middle between creatures and spells
While the chosen opponent will of course share in your spoils, youre getting the better deal, as theyre likely to be paying your dowry with all of their extra card draw