(This is because Divine Visitation's effect modifies how the tokens are created, and March of the Machines's effect doesn't apply until you consider how the tokens are entering the battlefield.) If an effect changes under whose control a token would be created, that effect applies before Divine Visitation's effect applies
Item Cards Item cards can be played without a summoning cost, and stay in play throughout the game until they are used or another card or game rule removes them from play
in the right scenarios, this card can be used to finish off the opponent on the spot
I prefer staying away, personally, and I'm much happier with what I concocted, but if what you want is to get a little nutty, the tools are there
to kill an artifact is fine, to kill 2 is a decent rate, and it gets better
What are Artist-proof Cards