It can potentially work very well, though Dragonite already requiring you draw two different types of energy gets even harder when there's a third, largely unhelpful energy type clogging things
Death Grasp Its weird to see a Fireball that doesnt have red in its mana cost, but Death Grasp acts as your Consume Spirit without limiting you to using only black mana on it
If you search up Blue Eyes White Dragon on tcgplayer, are you gonna buy the one thats $50 or the one thats $2, looks the same, and carries the same nostalgia kick that you want
Whats Inside THE CHRONICLES DECK: The Fallen & The Virtuous (All-Foil Edition)
That said, Felix would be best served by a deck built specifically around getting as triggered ability activations as possible, which would make theft-specific cards like Thieving Varmint and Sage of the Beyond less useful