The 1st Edition Base Set Mewtwo holo is, simply put, the definitive Mewtwo card, the most valuable printing of one of the most important Pokemon ever created, and its place at the top of this list was never seriously in question
The fact that vigilance creatures dont tap when they attack is what makes them excellent blockers
Its also a good card to try and trade off early and reanimate later with help of The Scarab God, as when it turns into a 4/4 that draws a card its a real threat
This three-cost song can be sung by most of the characters in the deck, allowing you to keep your ink available to play whatever you happen to draw
This means they can be used as beaters that can easily flee after accruing some damage, or they can be freely sent in after your Active Pokmon is knocked out and then swapped out again for something else after you draw and potentially have a better counter to whatever your opponent has out
As one of the series' best characters, it's exciting to see Blue get such a big highlight alongside his signature Pokmon