If the discard is random, Library lets you look at the card before deciding where it goes
Its going to be great for dealing with threats on the board, as long as they dont have Hexproof
Three main ways: going wide with tokens and an overrun or Coat of Arms, draining the table with Gray Merchant of Asphodel and aristocrats triggers, or grinding opponents out of resources through endless recursion until they cant keep up
This iteration of Urza gives all your artifact creatures a huge +2/+2 boost, catapulting them over your opponent's creatures
For removal, replacing Solitude and March of Otherworldly Light with Fateful Absence and Stroke of Midnight keeps your answers flexible and efficient
While were journeying across the multiverse, its worth highlighting a few commanders that enable hastey beats