At the start of your upkeep, Thopter Assembly will trigger, creating five 1/1 Thopter artifact creature tokens and bouncing Thopter assembly back to your hand
It draws you two cards when its blocked if your commander is on board
It is a bit expensive though, which is why you dont see a ton of people playing it
1 Blue Sun's Zenith 2 Preordain 2 Misty Rainforest 4 Ponder 2 Flooded Strand 2 Polluted Delta 3 Cunning Wish 12 Island 4 Brainstorm 4 Time Spiral 3 Turnabout 2 Mind Over Matter 3 Meditate 4 Force of Will 4 Merchant Scroll 4 High Tide 4 Candelabra of Tawnos 1 Blue Sun's Zenith 3 Pact of Negation 1 Wipe Away 4 Repeal 1 Echoing Truth 1 Brain Freeze 1 Rebuild 1 Turnabout 1 Meditate 1 Intuition It seems ironic, doesn't it
If you also attack with Phyrexian Dragon Engine, you still trigger Mishras attacking trigger, but then meld the two
However, as I reflect on the past year, my initial feeling isn't one of amused shame