As mentioned at several points in the video, it is of the utmost importance to always carry out more than one test, to use a verifiably genuine card for comparison and, if in doubt, to consult an additional expert
This means if a deck is built with Ruby and Amethyst cards, it cannot contain cards from Emerald or the other ink types
The shroud is nice, but with such a high mana cost, the entire reason youll want to play Cloak is for the unblockable if you want protection, just run Greaves or Boots
While it is possible to make a deck with many more, that will simply make it harder to find the cards the player needs
It's a whole thing, and honestly, this iconic scene is probably the last motivation that Cloud and company needed in order to take Sephiroth down
Ultimately, a Town Typal deck seems interesting, but not necessarily too strong on its own