As long as you're using mana rocks or Treasure as your mana sources, Shadow can significantly reduce the mental load of playing Magic , since you rarely need to worry about your opponents responding to your spells
"CARDNAME can't be countered" loudly sticks it to countermagic
Play sessions are often short and, because the current pool of cards is relatively small, there is a limited variety in what can be experienced at the moment
Two classic slug/burn Commanders also feature here: Vial Smasher the Fierce, and Mogis, God of Slaughter
Firstly, its a 4-mana spell for blue/red, and it has flashback for a second bite at the apple
Essentially periodically you will get wild cards for different rarities when opening packs