Cast Sphinx's Herald by paying ({U} magic symbol) .
Forensic Gadgeteer triggers, creating a Clue token.
Activate Urza's first ability by tapping the Clue, adding ({U} magic symbol) .
Activate Grand Architect's second ability by tapping Sphinx's Herald, adding ({C} magic symbol) ({C} magic symbol) that can only be spent to cast artifact spells or activate abilities of artifacts.
Activate Words of Wind by paying ({1} magic symbol) , replacing the next card you would draw by causing each player to return a permanent to their hand instead.
Activate the Clue by paying ({1} magic symbol) and sacrificing it, causing you to return Sphinx's Herald from the battlefield to your hand, and causing each opponent to return a permanent they control from the battlefield to their hand due to Words of Wind.
Repeat.
Results
Infinite LTB.
Infinite ETB.
Infinite storm count.
Return all permanents opponents control to their owner's hand.