Azula wants to be paired with flicker effects like Thassa, Deep-Dwelling so you can cast a spell, then flicker Azula to line up another threat
Specifically against Affinity, a deck which has recently been seeing more play and has even managed to top 8 the last Modern Challenge, destroying two artifacts very early can prevent them from even playing their Thought Monitor, Thoughtcast, Sojourners Companions and other cards since they will lack the necessary amount of Artifacts to enable Affinity
Toughness-matters decks tend to be stuffed with Walls and creatures with defender, the kinds of hidden gems youd usually find gathering dust at the bottom of game store bargain bins
Inside, find 5-8 premium, officially-licensed Magic: The Gathering collectibles
For two mana, you get to grab a creature from the top five cards of your deck, exiling it, and letting you cast it this turn
You can sacrifice creatures that would be destroyed anyway, allowing you to at least do some direct damage