It costs a lot of mana but lets you storm off in the late game if you have Lessons in your graveyard along with a cost reducer like Goblin Electromancer
If an equipment becomes a creature, its subject to the same rules governing creatures
Heres a more all-in approach that tries to get more value out of Purphoros: Creatures (31) 4 Ash Zealot 2 Gore-House Chainwalker 4 Rakdos Cackler 2 Legion Loyalist 4 Firefist Striker 4 Foundry Street Denizen 4 Boros Reckoner 3 Purphoros, God of the Forge 4 Firedrinker Satyr Lands (23) 23 Mountain Spells (2) Sideboard This version will get more Purphoros triggers, and his activated ability will scale better
Enchantment - Saga The Cyber-Controller When The Cyber-Controller enters, each opponent mills X cards
Whatever the reason, it can sometimes be easy to forget that playing to a colors strengths is what can enable us to build more cohesive decks and ultimately, decks that are more enjoyable to play
Ive seen this best executed with Heartstone to cheapen their effect and Soul Channeling to keep them on the field