Doctor Octopus, Master Planner and copies
I've recently been playing around with a commander deck themed around villain creatures and card draw, with [Doctor Octopus, Master Planner] at the helm.
There have been a couple times when playing this deck that I've had Doc Oc on the battlefield and then I cast [Chameleon, Master of Disguise] entering as a copy of my commander.
Now let's say that I have infinite hand size at this point from play something like [Reliquary Tower] and I have four cards in hand. When it becomes my end step, two triggers of Doc Oc's passive ability will go on the stack ("At the beginning of your end step, if you have fewer than eight cards in hand, draw cards equal to the difference"). Now, in this instance would I draw four cards from the first trigger and an addition four cards from the second OR would the second trigger recognize that I already have eight cards causing no addition cards to be drawn.
TLDR: I have Doctor Octopus, Master Planner and a copy of him. I have four cards in hand at my end step. How many cards do I draw?