I like a split card like this that can provide card advantage, and given just how many cards youd take out, its strong
Selecting the right commander is the most critical decision for any planeswalker-centric build, as the leader must provide the resource management, protection, or acceleration necessary to keep your friends on the board
Creature - Avatar The Kami War (As this Saga enters and after your draw step, add a lore counter.) I Exile target nonland permanent an opponent controls
The fact that creatures with encore come out hasted means most of the time one or more opponents will have lost life that turn as well
In BO1, you can have a very explosive draw with Leyline of Resonance in your hand, and a fast aggro start that ends the game as fast as turns 2 or 3
There is always more to be learned, none of us play a perfect game every time and there is incredible depth and subtlety in even the simplest of cube decks