all rainbow rare pokemon cards Top Eight Rarest Pokémon — MoneyMade The Cards Of Pokémon TCG:

Decks that want to play counters are almost always control decks, and control decks would much prefer to gain life rather than cause opponents to lose life, so all things being equal they would have preferred to play with Absorb but there were other considerations that forced most of them down the black road instead

Why is it popular, and why do people enjoy it, aside from what has been mentioned

I ran a speed test on my iPhone while connected to my home wifi (via Cox Gigablast) as a control

After processing the "when you would play" effect, you can then perform the DigiXros

It uses a special cross-hatched pattern that has a rainbow tint, and it makes this card look incredible

During your opponent's next turn, the Defending Pokemon can't retreat