Rad counters are not great if they are on you as a player, but lots of your Mutant creatures get powered up by rad counters, such as Mirelurk Queen and Screeching Scorchbeast
Kangaskhan was one of the original Mega Evolutions from the XY era, and also an original Kanto Pokmon, giving this card the new-form and nostalgia double whammy
They Came from the Pipes is a very niche card for exactly decks that care about face-down creatures
Outside of equipment, white's synergy with artifacts has kind of been on the back burner for a while, but it's started to become more apparent again with cards like this
The Ruby Storm game plan is pretty easy to understand
Also, it can target the opponent, so you can actually burn your opponent out with it (Ive done it and it has been done to me in Commander of all formats)