You already have a ton of sacrifice outlets, and not nearly as many token generators even if Tana is a token generator in the command zone
Not only are these cards incredibly expensive, but almost all the potential gainers have been analyzed and overanalyzed by speculators and writers like me over and over again
The Charizard card, in particular, has such as sense of bliss and serenity about it, from the cool colours to the paradoxically peaceful volcano in the backdrop, this is a version of Charizard we often dont get to see
To earn that spot, Tegwyll offers a helpful boost to your Faeries, which is more useful than you might otherwise think
Maybe one of them will even be your favourite Final Fantasy character, making the decision to make a deck for them a total no-brainer