You'll want to finish performing the other two dredge/draws of Cathartic Reunion first, meaning you may find Prized Amalgam on the last dredge attempt and those will see the Narcomoeba from the first dredge come into play
Many of the new cards dont do anything outside of Draft or Cube
This lowers the supply on the secondhand market, increasing the price, again reducing the supplycreating a seemingly endless loop
No matter what you're bouncing with Madam Mim, you ideally have Merlin, Shapeshifter on the board as well, who will gain extra lore value from questing every time a character returns to your hand
I wouldn't one four of these on the board if I was losing the game
Disrupting with Discard Discard effects are also only viable forms of disruption against the deck if you have a clock to go with it, because the Urza deck is well-suited to churn through the library in search of more copies of their best cards