By having the ETB effects scale up with which colors of mana were paid to cast them, the new elementals finally feel like hard-casting them is their peak form, the only way to access the full combination of effects and stats
Typical RRP for a Japanese booster box is 5500 ($36), of the four most recent sets, Black Bolt was around 12,000 ($79), White Flare, 11,000 ($72), Mega Symphonia, 9,000 ($59), and Mega Brave, 12,000 ($79)
Alakazam can take a while to set up, which is where Drowzees evolution, Hypno, becomes useful
Honorable Mention: Sprite Dragon I have seen Sprite Dragon used to a relatively-useful effect in games of Ikoria Limited
The whole card has a glossy finish
That means a single Shrapnel Blast is ten damage, which is a great thing to do with any extra Goggles you may have laying around that you were going to legend rule anyway