Although not entirely dependent on Fusions, since the deck also has XYZ and Link monsters, its greatest asset is its ability to Summon El Shaddoll Winda on turn 1 of the duel, even playing second, through Tearlaments Havnis' effect
As it stands, DeNA isn't very good at keeping its Pokemon Trading Card Game Pocket secrets under wraps, especially not its monthly Premium Pass promos
This means that in a game where a player draws Lasting Tarfire they are 4.3% less likely to win than if they had never drawn it at all
I'm unsure on how to balance this effect, but perhaps it could be an Ignition effect that lowers the Level of all WATER monsters in your possession by a single number until the end of the turn
Graded value depends on the exact grade, grading company, label type, and buyer trust in that category