Guaranteed Magnum Opus turn one? Yes please. I can think of the following scenarios:
Get Mopus in your opening draw. Installing click one and clicking Mopus 3x lets you end the turn at 6
Draw a Scavenge in your opening hand. Click 1, use the ID ability to tutor Mopus, install for 4, click 2 Scavenge it to permanently install it, clicks 3 & 4 get paid and end the turn at 5
Draw neither a Scavenge or Mopus in your opening hand. Use her ability to tutor an SMC and install Mopus. If you have to click for 2 then you can end turn 1 at 2, if you have a Dirty Laundry/Easy Mark or Sure Gamble to play click one, you can end turn 1 at 5 or 6, respectively. This works out the same if you draw an SMC in your opening hand.
Assuming a 45 card deck with 3 Mopus and 3 Scavenge, you have around a 50% chance of hitting either scenario 1 or 2, (I think, it's been a while since I calculated probability). If you have 6 econ events you can play turn 1, then you have a similar chance of avoiding the 2 outcome of scenario 3.