First we mill our opponents to make sure they have juicy things in their graveyards with cards like Soaring Thought-Thief, Consuming Aberration, and Oona, Queen of the Fae
This deals 50 damage and then heals the same amount to itself
In particular, Shiku is so cool that you can even feel the godliness, and it makes you want to own it
Furthermore, the cards look very nice and they have adopted the latest style of edges as well
In short, to take a mulligan is to decide that your opening hand is not good enough, so you shuffle those cards back into your opening hand and draw one fewer, hoping to find a better start to the game
Having as much Energy as possible is a key way to win a battle and Leaf helps to keep those numbers up