This loop is all about a clever conversion of cards into counters and back again, supercharged by replacement effects. When you strip two +1/+1 counters off Mindless Automaton to draw a card, Wizard Class rewards that draw by trying to place a counter back on it. That is where Doc Samson, Super Psychiatrist enters the picture, stepping in to amplify the incoming counters so that you actually net extras every single time. With Wizard Class already ensuring you have no maximum hand size to worry about, you can continuously strip and rebuild your Automaton to draw your entire deck.