Of course, if Sub-Grades were free, there would probably have been more demand, but thats not practical given the additional time (and therefore cost) involved
To dive deeper into rarities and the value of French-print cards, our article on the rarest French Pokemon cards provides plenty of reference points
5 Iono's Bellibolt ex Iono's Bellibolt ex allows you to attach as many Basic Lightning Energy cards from your hand to any of Iono's Pokemon during your turn
The other two promos are Bibarel [Brilliant Stars] and Moltres [Brilliant Stars] to bring the total count to four
Comically, even if you sacrifice all your Forests, presuming Wood Elemental was played on curve, you only get a 4/4
It sucks that it's a sorcery, but having spells that exile creatures is important since there are so many pesky creatures that need to be gone permanently