By the simple act of compensating you with card draw for each creature that attacks you, you can keep your decks engine running when youre staring down threatening attackers or use cards like Courtly Provocateur to draw cards right when you need to
In Commander, someone always tries to one-shot the table with a massive creature
ensures that whenever an opposing character is banished, the player can ready Queen of Hearts, Capricious Monarch
Blue Blue is the sneaky color
Even ignoring that massive oopsie, the lands are unremarkable -- notable inclusions are Game Trail, Cinder Glade, Raging Ravine, good stuff that match what the deck is going for, but nothing we haven't seen before
This Jace gets interesting when you start creating copies of the planeswalker with its final ability