Why are Pokemon cards so popular
As the game goes on, there start to become more and more things on the board and you have to balance trying to find items and things that you want/need to defeat these monsters and portals while staying alive and healing up your sanity and strength
Thanks to cards like Dictate of the Twin Gods, Fiery Emancipation, and Brash Taunter, a humble Shock can become a devastating amount of damage
Theoretically, thats the idea behind cascade, although there are ways to break that purity, as there always are with effects in MTG
Venom can exile cards from graveyards to add their strength to himself, and Doc Ock can animate a random artifact, turning it into an 8/8
Shining Revelry is one of the many expansion sets released thus far in Pokemon TCG Pocket