If you have a way to control the top of your library, you can cast your Auras and Equipment without needing to actually draw them
Sure, in the type of decks that want him, Urza probably will want to let that ultimate rip pretty often if you can, but he provides so much long term value that keeping him at high loyalty and just grinding out card advantage with him seems great in some games
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You could also play a fairer gameplan and bring back massive artifacts like Myr Battlesphere or Portal to Phyrexia over and over by flickering Sharuum with cards like Conjurer's Closet
In the Enchanted artwork by Stefano Zanchi, patterns and cutouts swirl behind Maui , who poses mid-dance with a beaming smile on his face
Whenever you exile one or more cards from your hand and/or permanents from the battlefield, create a 1/1 white Spirit creature token with flying