It was harder to justify in older builds as the deck spends all its mana so well, and getting choked on mana is a general concern
Powerful but hard to get the desired value from
But you can enchant artifact tokens or even a basic land if you can turn it into an artifact
A common line of play will be to resolve All Hallows Eve, and then to activate Bazaar of Bagdad three times before the All Hallows Eve effect takes place (tapping Bazaar once on the turn Eve is cast, once on the next turn, and finally again on the next upkeep before the last scream counter is removed)
In the TCG, Hypno has really done well for itself, receiving both fantastic art and creative attack names bravo, guys
With Puresteel Paladin on the battlefield, you could play all your free equipment spells, draw cards each time, and finish the game with a giant [c]Grapeshot[/c]