this is an allusion to the fact that Skyla is a Flying-type specialist
If our opponent cracks a fetch land or shocks themselves, we don't even need the Kor Firewalker, which makes the combo of Boros Reckoner and Volcano Hellion pretty much the same as the recently-banned Splinter Twin combo a turn four, two-card combo
Nasty game winner in the Command Zone
When a Myrna plays an individual sport, it usually gives them more opportunities to enhance their personal skills, such as being able to manage emotions, cope with stress, and build righteous and entertaining
In addition to this, a big part of the reason these cards were so popular was because the mana in that Standard format was quite bad, to the extent that you were pretty close to wanting Attune with Aether in your decks even before the energy bonus, but once you have the energy bonus you might as well play Harnessed Lightning, which means you may as well play Rogue Refiner to power up your kill spell, and so on
When you cast a spell with kicker, it adds to the overall cost of the spell