The flying counter is a fun touch, I think the viability of this really just depends on your deck construction and if you have enough things you'd want to target with this to make it worthwhile
The Pokmon TCGs Japanese logo sits to the right of the silhouette, with Secret Super Battle written in English underneath
This opens up Hypnos values dramatically as it doesnt need any Energy to put in work: this means you can safely put Hypno in very Energy-heavy decks like Mewtwo EX or even non-Psychic decks like Wigglytuff EX
Heres what you need to know
Not only that, but this makes some extremely ambitious additions to the Pokemon formula for a GBA ROM hack
The main idea of this card is to cycle it early if you dont have enough mana to put it down, making it essentially a Flash creature that reads Draw a card this creature enters the battlefield. Once you have enough mana to put it down and cast another spell in the same turn, youll have a factory of death sharks that your opponent will struggle to come back from