When you look at lower-powered Cubes, its much easier to justify playing the individual halves of Urza, but then actually melding the card starts to look completely absurd compared to the opposition
If Green can have the ultimate Coastal Piracy with Toski, Bearer of Secrets, then White can be allowed some actual good draw too, no
Blue usually taps creatures only when also given the ability to untap them
The other option some collectors take is cracking the slab entirely and resubmitting raw for a fresh assessment
The deck has enough card-drawing capacity, with Copycat, Poke Ball, and Professors Research cards
Or, decorate them with a rendering of the One Ring of the Eye of Sauron