The idea is to get a card into play and have an immediate effect, then exit and come back later
Some of the cards that are good for your deck, like Sanctum Gargoyle, Executioners Capsule, and the Spellbombs, are good in other decks, so the most likely way to end up in Affinity is to just backdoor into it after picking up a few of these and noticing quality artifacts going late
Nin in particular gives another dimension to a Zedruu deck by providing gifts of cards to players
Edric is a fantastic commander for those who enjoy the political aspect of EDH, convincing your opponents to turn their aggression elsewhere as you compile an unblockable army with a Triumph of the Hordes lurking in your hand
Let's turn to some support cards
Here are some of the cards that pull me into UR: This is a strong deck, and a very good tool to have in your arsenal