Casting something like Counterspell means you're denying your opponent's actions, essentially declaring Not on my watch! when they attempt to cast a crucial spell
There are advantages and disadvantages to all of them, but the ability to sweep your opponent's creatures while leaving your own Yasharn alive and playing Uro, Titan of Nature's Wrath for free has convinced many Four-Color Midrange players to include Yahenni's Expertise
Vial Smasher the Fierce It could be argued that Vial Smasher the Fierce should be higher, but that would be when its properly paired up with some of the partner cards that truly bring out its potential
I miss those cards
Notably, Dour Port-Mage also triggers if your creatures get exiled directly from the battlefield, whether that's with your own blink effect, or with an opponent's exile removal like Banishing Light
With Disney Lorcana , we were ready to play in 15 minutes with only minimal fumbling through the first round of play