Add to this that it's a relatively inexpensive Song, and you can have your character sing it to deal damage to every opposing character on the field
the thought was that "players (...) wouldn't be able to acquire many of the power rares, because supply would keep them actually rare"
This is a core color combination we talked about in the article about planeswalkers, and theres an overlap with that theme: proliferate
YouTuber Tricky Gym explains that with the right drawing engines, this attack can be easily relied upon to take down the biggest of big Pokmon, and with Blacephalon coming from a meta dominated by bulky Fusions and VMAXs, that is hugely important
[On K type Character card with a cost of 3 from your deck
So, you know, thats a lot of potential keywords, to say the least