Look, Firesong and Sunspeaker can do silly things, but there's a lot of crappy deck lists flooding the internet right now that worry me, like suddenly every card that people would unanimously agree are utter trash in Commander are suddenly amazing because it's moderately good when their 6 cmc commander with no built-in protection against removal is on the table
Mega Heracross joins the lineup, and Seismitoad-EX made its disruptive debut
If you do, put two +1/+1 counters on Hei Bai
No matter what style or color combination of Dragons you want to play, the deck comes with a legendary Dragon that will be perfect as your commander
It is also reminiscent of the many board-wipe spells White is known for, such as cleansing nova and Armageddon
(Our penultimate mythic, by the way, back here at #20)