You can activate it to turn off a Rakdos player's hellbent abilities, force a player to draw an eighth card before their own cleanup phase so that they need to discard, or interfere with Flubs, the Fool's card replacement mechanic
Right now the top 10 Pokmon TCG Ascended Heroes cards (according to average prices on secondary markets like TCGPlayer and eBay) are:
Players could make early use of this by using the Forest of Giant Plants to instantly evolve their Oddish into Gloom and finally into Vileplume, all in one turn
Another deck features some iconic villains from the series led by Davros, the engineer of the Daleks
Furthermore, this fusion is Level 6, meaning that it is useful for making XYZ monsters with the Fiendsmith archetype's most important cards
Its my single favorite Enchanted so far, and I would not be surprised to see it retain a lot of value overtime