The value of Magic cards is influenced by rarity, competitive playability, print edition, and historical significance
(The copy becomes a token.) The triggered ability Case of the Shifting Visage has when it's solved and the copy it creates will resolve before the spell that caused the ability to trigger
Massacre Girl Playing Massacre Girl as your commander is a definite statement, and one which the Toski, Bearer of Secrets player at the table isnt a fan of
A 5/4 body for four mana is already solid
You can view all your cards at the same time, so you can get strategic with which Pokmon you want to play. Sean: You need to have a shuffled deck, a table large enough for both players to play their cards, and a hand of six cards (like the number of Pokmon you can have in your party!). Both James and Sean got some elements right, but the correct answer is a little more involved
That creature can be the commander of your deck