Ultimately, when looking at what Energy cards to put in, you just need to be conscious of not adding too many non-artifact sources of energy
His take on Tarkirs Dragonlord Dromoka does just this, introducing elements that feel alien, yet simultaneously totally appropriate for one of Magics Elder Dragons
But you can make a ton of 2/2 Wolves before the flipping of Garruk
Fighter class, with multiple weapon uses, medium level lyric knowledge, and high levels of tomfoolery - a valuable play in the music games to come
The mana value of the spell remains unchanged, no matter what the total cost to cast it was
While those decks might have some answers to Skyscraper, most arent properly equipped to deal with it