Those are fake cards * , although from the image I see they use the actual names of existing, original cards, and even the correct effects (for example Hiro's Shadow Scout)
The only weakness to the deck is without enough Infernoids in graveyard they run out of resources too quickly
Woobat plays a unique role in the games, often not a player's first pick, but valued for its unexpected utility and charm
Seriously though, we really should unban Splinter Twin, which holds the record for least logical banning of all time, based on the justification of shaking up the Modern meta for a Pro Tour (Remember when those were a thing?) to get people to watch coverage (Remember when that was a thing?) for a paper Modern tournament (...)
The price for first-edition copies of this card is incredibly strong, as the range remains relatively tight between $280 and $330