First turn KO's are its speciality--it uses lots of cheap attacks with easy-to-power up Pokemon like Hitmonchan, Hitmonlee, Scyther, and Electabuzz
It does get worse the later you play it, but it is still likely to grow basically any time you play a creature at that point You have a pretty good chance of hitting two lands when you cast this, and thats some pretty serious ramp but I love that you can choose some combination of lands and proliferating when you cast this
Knockout Blow requires a creature to be in combat, but it rewards the controller with two life
In terms of rarity, BREAK cards were apart of the now-ageing X and Y generation, so theyre becoming harder to find, but are still available in some places
Either way, thanks to Terravores dominant performance at the Italian Premodern championships, the card has seen a smaller spike in price