In general, I would guess the default number of Purphoros in a deck is closer to three, and it probably isnt crazy to play only two
Creatures, artifacts, and enchantments go above that, and then the red zone is where you put creatures when you are attacking with them
It's one of the single best cards at having a powerful early game presence
Finally, her -6 gives you an emblem with "Whenever you cast a noncreature spell, you draw a card." You can have all of this disruption hit the board for only three mana, which is just ridiculous
Silas Renn, Seeker Adept [Best Artifact Recursion Partner] Silas Renn, Seeker Adept supports artifact strategies by turning combat damage into long-term resource access
It's because an opponent can easily shut them down with removal spells